66902684 has 12 divisors (see below), whose sum is σ = 123966864. Its totient is φ = 31483584.

The previous prime is 66902669. The next prime is 66902707. The reversal of 66902684 is 48620966.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 491864 + ... + 491999.

It is an arithmetic number, because the mean of its divisors is an integer number (10330572).

Almost surely, 2^66902684 is an apocalyptic number.

It is an amenable number.

66902684 is a deficient number, since it is larger than the sum of its proper divisors (57064180).

66902684 is a wasteful number, since it uses less digits than its factorization.

66902684 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 983884 (or 983882 counting only the distinct ones).

The product of its (nonzero) digits is 124416, while the sum is 41.

The square root of 66902684 is about 8179.4060909090. The cubic root of 66902684 is about 405.9580711713.

The spelling of 66902684 in words is "sixty-six million, nine hundred two thousand, six hundred eighty-four".