64672508 has 24 divisors (see below), whose sum is σ = 115858512. Its totient is φ = 31576064.

The previous prime is 64672493. The next prime is 64672511. The reversal of 64672508 is 80527646.

It is a happy number.

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 7 ways as a sum of consecutive naturals, for example, 53891 + ... + 55077.

It is an arithmetic number, because the mean of its divisors is an integer number (4827438).

Almost surely, 2^64672508 is an apocalyptic number.

It is an amenable number.

64672508 is a deficient number, since it is larger than the sum of its proper divisors (51186004).

64672508 is a wasteful number, since it uses less digits than its factorization.

64672508 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1501 (or 1499 counting only the distinct ones).

The product of its (nonzero) digits is 80640, while the sum is 38.

The square root of 64672508 is about 8041.9219095935. The cubic root of 64672508 is about 401.3961793712.

The spelling of 64672508 in words is "sixty-four million, six hundred seventy-two thousand, five hundred eight".