64270864 has 20 divisors (see below), whose sum is σ = 142314304. Its totient is φ = 27544608.

The previous prime is 64270849. The next prime is 64270891. The reversal of 64270864 is 46807246.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 286812 + ... + 287035.

Almost surely, 2^64270864 is an apocalyptic number.

It is an amenable number.

64270864 is an abundant number, since it is smaller than the sum of its proper divisors (78043440).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

64270864 is a wasteful number, since it uses less digits than its factorization.

64270864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 573862 (or 573856 counting only the distinct ones).

The product of its (nonzero) digits is 64512, while the sum is 37.

The square root of 64270864 is about 8016.9111258639. The cubic root of 64270864 is about 400.5635057803.

The spelling of 64270864 in words is "sixty-four million, two hundred seventy thousand, eight hundred sixty-four".