66902152 has 16 divisors (see below), whose sum is σ = 128359440. Its totient is φ = 32672976.

The previous prime is 66902137. The next prime is 66902153. The reversal of 66902152 is 25120966.

It is a super-2 number, since 2×66902152² = 8951795884462208, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (66902153) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 96898 + ... + 97585.

It is an arithmetic number, because the mean of its divisors is an integer number (8022465).

Almost surely, 2^66902152 is an apocalyptic number.

It is an amenable number.

66902152 is a deficient number, since it is larger than the sum of its proper divisors (61457288).

66902152 is a wasteful number, since it uses less digits than its factorization.

66902152 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 194532 (or 194528 counting only the distinct ones).

The product of its (nonzero) digits is 6480, while the sum is 31.

The square root of 66902152 is about 8179.3735701458. The cubic root of 66902152 is about 405.9569951295.

The spelling of 66902152 in words is "sixty-six million, nine hundred two thousand, one hundred fifty-two".