| Base | Representation |
|---|---|
| bin | 1111010111101… |
| … | …0101000100000 |
| 3 | 11111022011221220 |
| 4 | 3311322220200 |
| 5 | 113000343230 |
| 6 | 10221415040 |
| 7 | 1411642614 |
| oct | 365725040 |
| 9 | 144264856 |
| 10 | 64465440 |
| 11 | 33430926 |
| 12 | 1970a480 |
| 13 | 10481640 |
| 14 | 87c1344 |
| 15 | 59d5d10 |
| hex | 3d7aa20 |
64465440 has 96 divisors (see below), whose sum is σ = 218707776. Its totient is φ = 15866880.
The previous prime is 64465439. The next prime is 64465441. The reversal of 64465440 is 4456446.
64465440 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.
It is an interprime number because it is at equal distance from previous prime (64465439) and next prime (64465441).
It is a tau number, because it is divible by the number of its divisors (96).
It is not an unprimeable number, because it can be changed into a prime (64465441) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (13) of ones.
It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1075 + ... + 11405.
It is an arithmetic number, because the mean of its divisors is an integer number (2278206).
Almost surely, 264465440 is an apocalyptic number.
64465440 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 64465440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (109353888).
64465440 is an abundant number, since it is smaller than the sum of its proper divisors (154242336).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
64465440 is a wasteful number, since it uses less digits than its factorization.
64465440 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 10362 (or 10354 counting only the distinct ones).
The product of its (nonzero) digits is 46080, while the sum is 33.
The square root of 64465440 is about 8029.0373021926. The cubic root of 64465440 is about 400.9673254845.
The spelling of 64465440 in words is "sixty-four million, four hundred sixty-five thousand, four hundred forty".
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