647430036 has 96 divisors (see below), whose sum is σ = 1736598528. Its totient is φ = 185813760.

The previous prime is 647430019. The next prime is 647430037. The reversal of 647430036 is 630034746.

It is a super-2 number, since 2×647430036² = 838331303029922592, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a junction number, because it is equal to n+sod(n) for n = 647429979 and 647430006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (647430037) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 323856 + ... + 325848.

It is an arithmetic number, because the mean of its divisors is an integer number (18089568).

Almost surely, 2^647430036 is an apocalyptic number.

647430036 is a gapful number since it is divisible by the number (66) 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 647430036, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (868299264).

647430036 is an abundant number, since it is smaller than the sum of its proper divisors (1089168492).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

647430036 is a wasteful number, since it uses less digits than its factorization.

647430036 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2141 (or 2139 counting only the distinct ones).

The product of its (nonzero) digits is 36288, while the sum is 33.

The square root of 647430036 is about 25444.6465096295. The cubic root of 647430036 is about 865.0959546955.

The spelling of 647430036 in words is "six hundred forty-seven million, four hundred thirty thousand, thirty-six".