166345656 has 16 divisors (see below), whose sum is σ = 415864200. Its totient is φ = 55448544.

The previous prime is 166345649. The next prime is 166345667. The reversal of 166345656 is 656543661.

It is a congruent number.

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, 3465511 + ... + 3465558.

Almost surely, 2^166345656 is an apocalyptic number.

It is an amenable number.

166345656 is an abundant number, since it is smaller than the sum of its proper divisors (249518544).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

166345656 is a wasteful number, since it uses less digits than its factorization.

166345656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6931078 (or 6931074 counting only the distinct ones).

The product of its digits is 388800, while the sum is 42.

The square root of 166345656 is about 12897.5058053873. The cubic root of 166345656 is about 549.9676631126.

The spelling of 166345656 in words is "one hundred sixty-six million, three hundred forty-five thousand, six hundred fifty-six".