64609628 has 18 divisors (see below), whose sum is σ = 114110808. Its totient is φ = 32008120.

The previous prime is 64609627. The next prime is 64609669. The reversal of 64609628 is 82690646.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64609621) by changing a digit.

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 5 ways as a sum of consecutive naturals, for example, 207593 + ... + 207903.

Almost surely, 2^64609628 is an apocalyptic number.

It is an amenable number.

64609628 is a deficient number, since it is larger than the sum of its proper divisors (49501180).

64609628 is a wasteful number, since it uses less digits than its factorization.

64609628 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 793 (or 480 counting only the distinct ones).

The product of its (nonzero) digits is 124416, while the sum is 41.

The square root of 64609628 is about 8038.0114456251. The cubic root of 64609628 is about 401.2660469186.

The spelling of 64609628 in words is "sixty-four million, six hundred nine thousand, six hundred twenty-eight".