64605868 has 12 divisors (see below), whose sum is σ = 113419152. Its totient is φ = 32200400.

The previous prime is 64605859. The next prime is 64605883. The reversal of 64605868 is 86850646.

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, 24208 + ... + 26743.

It is an arithmetic number, because the mean of its divisors is an integer number (9451596).

Almost surely, 2^64605868 is an apocalyptic number.

It is an amenable number.

64605868 is a deficient number, since it is larger than the sum of its proper divisors (48813284).

64605868 is a wasteful number, since it uses less digits than its factorization.

64605868 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51272 (or 51270 counting only the distinct ones).

The product of its (nonzero) digits is 276480, while the sum is 43.

The square root of 64605868 is about 8037.7775535281. Note that the first 3 decimals coincide. The cubic root of 64605868 is about 401.2582627867.

The spelling of 64605868 in words is "sixty-four million, six hundred five thousand, eight hundred sixty-eight".