| Base | Representation |
|---|---|
| bin | 100110101101001… |
| … | …011100001101100 |
| 3 | 1200020220211000100 |
| 4 | 212231023201230 |
| 5 | 2312220043100 |
| 6 | 144234231100 |
| 7 | 22043423013 |
| oct | 4655134154 |
| 9 | 1606824010 |
| 10 | 649377900 |
| 11 | 303614256 |
| 12 | 161585490 |
| 13 | a46c6aa2 |
| 14 | 6235ba7a |
| 15 | 3c023400 |
| hex | 26b4b86c |
649377900 has 108 divisors (see below), whose sum is σ = 2155221432. Its totient is φ = 162977280.
The previous prime is 649377887. The next prime is 649377901. The reversal of 649377900 is 9773946.
649377900 is a `hidden beast` number, since 6 + 493 + 77 + 90 + 0 = 666.
649377900 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.
It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.
It is a Harshad number since it is a multiple of its sum of digits (45).
It is not an unprimeable number, because it can be changed into a prime (649377901) by changing a digit.
It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 5922 + ... + 36521.
It is an arithmetic number, because the mean of its divisors is an integer number (19955754).
Almost surely, 2649377900 is an apocalyptic number.
649377900 is a gapful number since it is divisible by the number (60) formed by its first and last digit.
It is an amenable number.
It is a practical number, because each smaller number is the sum of distinct divisors of 649377900, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1077610716).
649377900 is an abundant number, since it is smaller than the sum of its proper divisors (1505843532).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
649377900 is a wasteful number, since it uses less digits than its factorization.
649377900 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 42480 (or 42470 counting only the distinct ones).
The product of its (nonzero) digits is 285768, while the sum is 45.
The square root of 649377900 is about 25482.8942626225. The cubic root of 649377900 is about 865.9626646446.
The spelling of 649377900 in words is "six hundred forty-nine million, three hundred seventy-seven thousand, nine hundred".
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