64646032 has 20 divisors (see below), whose sum is σ = 136638576. Its totient is φ = 29384480.

The previous prime is 64646027. The next prime is 64646033. The reversal of 64646032 is 23064646.

It is a junction number, because it is equal to n+sod(n) for n = 64645985 and 64646003.

It is not an unprimeable number, because it can be changed into a prime (64646033) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 183478 + ... + 183829.

Almost surely, 2^64646032 is an apocalyptic number.

It is an amenable number.

64646032 is an abundant number, since it is smaller than the sum of its proper divisors (71992544).

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

64646032 is a wasteful number, since it uses less digits than its factorization.

64646032 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 367326 (or 367320 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 31.

The square root of 64646032 is about 8040.2756171664. The cubic root of 64646032 is about 401.3413966094.

The spelling of 64646032 in words is "sixty-four million, six hundred forty-six thousand, thirty-two".