66112656 has 20 divisors (see below), whose sum is σ = 170791152. Its totient is φ = 22037536.

The previous prime is 66112639. The next prime is 66112661. The reversal of 66112656 is 65621166.

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, 688626 + ... + 688721.

Almost surely, 2^66112656 is an apocalyptic number.

It is an amenable number.

66112656 is an abundant number, since it is smaller than the sum of its proper divisors (104678496).

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

66112656 is a wasteful number, since it uses less digits than its factorization.

66112656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1377358 (or 1377352 counting only the distinct ones).

The product of its digits is 12960, while the sum is 33.

The square root of 66112656 is about 8130.9689459498. The cubic root of 66112656 is about 404.3538056715.

The spelling of 66112656 in words is "sixty-six million, one hundred twelve thousand, six hundred fifty-six".