166057656 has 16 divisors (see below), whose sum is σ = 415144200. Its totient is φ = 55352544.

The previous prime is 166057651. The next prime is 166057679. The reversal of 166057656 is 656750661.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166057651) 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, 3459511 + ... + 3459558.

Almost surely, 2^166057656 is an apocalyptic number.

It is an amenable number.

166057656 is an abundant number, since it is smaller than the sum of its proper divisors (249086544).

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

166057656 is a wasteful number, since it uses less digits than its factorization.

166057656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6919078 (or 6919074 counting only the distinct ones).

The product of its (nonzero) digits is 226800, while the sum is 42.

The square root of 166057656 is about 12886.3360192104. The cubic root of 166057656 is about 549.6500870726.

The spelling of 166057656 in words is "one hundred sixty-six million, fifty-seven thousand, six hundred fifty-six".