64860664 has 16 divisors (see below), whose sum is σ = 132669720. Its totient is φ = 29482080.

The previous prime is 64860643. The next prime is 64860671. The reversal of 64860664 is 46606846.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 368439 + ... + 368614.

Almost surely, 2^64860664 is an apocalyptic number.

It is an amenable number.

64860664 is an abundant number, since it is smaller than the sum of its proper divisors (67809056).

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

64860664 is a wasteful number, since it uses less digits than its factorization.

64860664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 737070 (or 737066 counting only the distinct ones).

The product of its (nonzero) digits is 165888, while the sum is 40.

The square root of 64860664 is about 8053.6118605257. The cubic root of 64860664 is about 401.7850719452.

The spelling of 64860664 in words is "sixty-four million, eight hundred sixty thousand, six hundred sixty-four".