66902912 has 16 divisors (see below), whose sum is σ = 133283400. Its totient is φ = 33451392.

The previous prime is 66902851. The next prime is 66902923. The reversal of 66902912 is 21920966.

It is a tau number, because it is divible by the number of its divisors (16).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 261212 + ... + 261467.

Almost surely, 2^66902912 is an apocalyptic number.

It is an amenable number.

66902912 is a deficient number, since it is larger than the sum of its proper divisors (66380488).

66902912 is an equidigital number, since it uses as much as digits as its factorization.

66902912 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 522693 (or 522681 counting only the distinct ones).

The product of its (nonzero) digits is 11664, while the sum is 35.

The square root of 66902912 is about 8179.4200283394. The cubic root of 66902912 is about 405.9585323304.

The spelling of 66902912 in words is "sixty-six million, nine hundred two thousand, nine hundred twelve".