166913271 has 64 divisors (see below), whose sum is σ = 303436800. Its totient is φ = 88553088.

The previous prime is 166913267. The next prime is 166913321. The reversal of 166913271 is 172319661.

It is not a de Polignac number, because 166913271 - 2² = 166913267 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166913171) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 189885 + ... + 190761.

It is an arithmetic number, because the mean of its divisors is an integer number (4741200).

Almost surely, 2^166913271 is an apocalyptic number.

166913271 is a deficient number, since it is larger than the sum of its proper divisors (136523529).

166913271 is a wasteful number, since it uses less digits than its factorization.

166913271 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 965 (or 959 counting only the distinct ones).

The product of its digits is 13608, while the sum is 36.

The square root of 166913271 is about 12919.4919017738. The cubic root of 166913271 is about 550.5924975801.

The spelling of 166913271 in words is "one hundred sixty-six million, nine hundred thirteen thousand, two hundred seventy-one".