64456832 has 32 divisors (see below), whose sum is σ = 140086800. Its totient is φ = 29297920.

The previous prime is 64456801. The next prime is 64456841. The reversal of 64456832 is 23865446.

It is a tau number, because it is divible by the number of its divisors (32).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21482 + ... + 24297.

Almost surely, 2^64456832 is an apocalyptic number.

It is an amenable number.

64456832 is an abundant number, since it is smaller than the sum of its proper divisors (75629968).

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

64456832 is a wasteful number, since it uses less digits than its factorization.

64456832 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45804 (or 45792 counting only the distinct ones).

The product of its digits is 138240, while the sum is 38.

The square root of 64456832 is about 8028.5012299931. The cubic root of 64456832 is about 400.9494777799.

The spelling of 64456832 in words is "sixty-four million, four hundred fifty-six thousand, eight hundred thirty-two".