64125866 has 16 divisors (see below), whose sum is σ = 112005504. Its totient is φ = 26963664.

The previous prime is 64125839. The next prime is 64125871. The reversal of 64125866 is 66852146.

It is a super-2 number, since 2×64125866² = 8224253380499912, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 42470 + ... + 43953.

It is an arithmetic number, because the mean of its divisors is an integer number (7000344).

Almost surely, 2^64125866 is an apocalyptic number.

64125866 is a deficient number, since it is larger than the sum of its proper divisors (47879638).

64125866 is a wasteful number, since it uses less digits than its factorization.

64125866 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 86485.

The product of its digits is 69120, while the sum is 38.

The square root of 64125866 is about 8007.8627610618. The cubic root of 64125866 is about 400.2620491215.

The spelling of 64125866 in words is "sixty-four million, one hundred twenty-five thousand, eight hundred sixty-six".