64579964 has 6 divisors (see below), whose sum is σ = 113014944. Its totient is φ = 32289980.

The previous prime is 64579939. The next prime is 64579969. The reversal of 64579964 is 46997546.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64579969) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8072492 + ... + 8072499.

It is an arithmetic number, because the mean of its divisors is an integer number (18835824).

Almost surely, 2^64579964 is an apocalyptic number.

It is an amenable number.

64579964 is a deficient number, since it is larger than the sum of its proper divisors (48434980).

64579964 is a wasteful number, since it uses less digits than its factorization.

64579964 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16144995 (or 16144993 counting only the distinct ones).

The product of its digits is 1632960, while the sum is 50.

The square root of 64579964 is about 8036.1660012720. The cubic root of 64579964 is about 401.2046268768.

The spelling of 64579964 in words is "sixty-four million, five hundred seventy-nine thousand, nine hundred sixty-four".