64579904 has 14 divisors (see below), whose sum is σ = 128150874. Its totient is φ = 32289920.

The previous prime is 64579901. The next prime is 64579919. The reversal of 64579904 is 40997546.

It can be written as a sum of positive squares in only one way, i.e., 63234304 + 1345600 = 7952^2 + 1160^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64579901) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 504467 + ... + 504594.

Almost surely, 2^64579904 is an apocalyptic number.

64579904 is a gapful number since it is divisible by the number (64) formed by its first and last digit.

It is an amenable number.

64579904 is a deficient number, since it is larger than the sum of its proper divisors (63570970).

64579904 is a wasteful number, since it uses less digits than its factorization.

64579904 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1009073 (or 1009063 counting only the distinct ones).

The product of its (nonzero) digits is 272160, while the sum is 44.

The square root of 64579904 is about 8036.1622681477. The cubic root of 64579904 is about 401.2045026262.

It can be divided in two parts, 6457 and 9904, that added together give a palindrome (16361).

The spelling of 64579904 in words is "sixty-four million, five hundred seventy-nine thousand, nine hundred four".