66902312 has 16 divisors (see below), whose sum is σ = 125908800. Its totient is φ = 33326640.

The previous prime is 66902267. The next prime is 66902321. The reversal of 66902312 is 21320966.

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, 13262 + ... + 17597.

It is an arithmetic number, because the mean of its divisors is an integer number (7869300).

Almost surely, 2^66902312 is an apocalyptic number.

It is an amenable number.

66902312 is a deficient number, since it is larger than the sum of its proper divisors (59006488).

66902312 is a wasteful number, since it uses less digits than its factorization.

66902312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31136 (or 31132 counting only the distinct ones).

The product of its (nonzero) digits is 3888, while the sum is 29.

The square root of 66902312 is about 8179.3833508401. The cubic root of 66902312 is about 405.9573187517.

The spelling of 66902312 in words is "sixty-six million, nine hundred two thousand, three hundred twelve".