66956992 has 14 divisors (see below), whose sum is σ = 132867908. Its totient is φ = 33478464.

The previous prime is 66956963. The next prime is 66957001. The reversal of 66956992 is 29965966.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 523038 + ... + 523165.

Almost surely, 2^66956992 is an apocalyptic number.

It is an amenable number.

66956992 is a deficient number, since it is larger than the sum of its proper divisors (65910916).

66956992 is a wasteful number, since it uses less digits than its factorization.

66956992 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1046215 (or 1046205 counting only the distinct ones).

The product of its digits is 1574640, while the sum is 52.

The square root of 66956992 is about 8182.7252184098. The cubic root of 66956992 is about 406.0678864375.

The spelling of 66956992 in words is "sixty-six million, nine hundred fifty-six thousand, nine hundred ninety-two".