64804992 has 64 divisors (see below), whose sum is σ = 196737600. Its totient is φ = 18514944.

The previous prime is 64804931. The next prime is 64805009. The reversal of 64804992 is 29940846.

It is a tau number, because it is divible by the number of its divisors (64).

It is a Harshad number since it is a multiple of its sum of digits (42).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9367 + ... + 14742.

It is an arithmetic number, because the mean of its divisors is an integer number (3074025).

Almost surely, 2^64804992 is an apocalyptic number.

It is an amenable number.

64804992 is an abundant number, since it is smaller than the sum of its proper divisors (131932608).

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

64804992 is a wasteful number, since it uses less digits than its factorization.

64804992 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24133 (or 24121 counting only the distinct ones).

The product of its (nonzero) digits is 124416, while the sum is 42.

The square root of 64804992 is about 8050.1547811207. The cubic root of 64804992 is about 401.6700840106.

The spelling of 64804992 in words is "sixty-four million, eight hundred four thousand, nine hundred ninety-two".