64750664 has 32 divisors (see below), whose sum is σ = 132753600. Its totient is φ = 29363520.

The previous prime is 64750663. The next prime is 64750709. The reversal of 64750664 is 46605746.

It is not an unprimeable number, because it can be changed into a prime (64750663) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 73394 + ... + 74270.

It is an arithmetic number, because the mean of its divisors is an integer number (4148550).

Almost surely, 2^64750664 is an apocalyptic number.

It is an amenable number.

64750664 is an abundant number, since it is smaller than the sum of its proper divisors (68002936).

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

64750664 is a wasteful number, since it uses less digits than its factorization.

64750664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1733 (or 1729 counting only the distinct ones).

The product of its (nonzero) digits is 120960, while the sum is 38.

The square root of 64750664 is about 8046.7797285622. The cubic root of 64750664 is about 401.5578085388.

The spelling of 64750664 in words is "sixty-four million, seven hundred fifty thousand, six hundred sixty-four".