64797872 has 20 divisors (see below), whose sum is σ = 125683176. Its totient is φ = 32363520.

The previous prime is 64797839. The next prime is 64797881. The reversal of 64797872 is 27879746.

It is a self number, because there is not a number n which added to its sum of digits gives 64797872.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19088 + ... + 22224.

Almost surely, 2^64797872 is an apocalyptic number.

It is an amenable number.

64797872 is a deficient number, since it is larger than the sum of its proper divisors (60885304).

64797872 is a wasteful number, since it uses less digits than its factorization.

64797872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4436 (or 4430 counting only the distinct ones).

The product of its digits is 1185408, while the sum is 50.

The square root of 64797872 is about 8049.7125414514. The cubic root of 64797872 is about 401.6553732317.

The spelling of 64797872 in words is "sixty-four million, seven hundred ninety-seven thousand, eight hundred seventy-two".