166041657 has 12 divisors (see below), whose sum is σ = 248721200. Its totient is φ = 110694276.

The previous prime is 166041643. The next prime is 166041679. The reversal of 166041657 is 756140661.

166041657 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 166041657 - 2¹⁵ = 166008889 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (166041857) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 341407 + ... + 341892.

Almost surely, 2^166041657 is an apocalyptic number.

It is an amenable number.

166041657 is a deficient number, since it is larger than the sum of its proper divisors (82679543).

166041657 is an frugal number, since it uses more digits than its factorization.

166041657 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 683314 (or 683302 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 36.

The square root of 166041657 is about 12885.7152304403. The cubic root of 166041657 is about 549.6324342999.

The spelling of 166041657 in words is "one hundred sixty-six million, forty-one thousand, six hundred fifty-seven".