64642604 has 24 divisors (see below), whose sum is σ = 127125600. Its totient is φ = 28537344.

The previous prime is 64642603. The next prime is 64642637. The reversal of 64642604 is 40624646.

It is not an unprimeable number, because it can be changed into a prime (64642601) 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, 25829 + ... + 28220.

It is an arithmetic number, because the mean of its divisors is an integer number (5296900).

Almost surely, 2^64642604 is an apocalyptic number.

It is an amenable number.

64642604 is a deficient number, since it is larger than the sum of its proper divisors (62482996).

64642604 is a wasteful number, since it uses less digits than its factorization.

64642604 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54089 (or 54087 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 32.

The square root of 64642604 is about 8040.0624375685. The cubic root of 64642604 is about 401.3343024765.

The spelling of 64642604 in words is "sixty-four million, six hundred forty-two thousand, six hundred four".