166836872 has 48 divisors (see below), whose sum is σ = 338442300. Its totient is φ = 77045760.

The previous prime is 166836869. The next prime is 166836881. The reversal of 166836872 is 278638661.

166836872 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 110796676 + 56040196 = 10526^2 + 7486^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 117704 + ... + 119112.

Almost surely, 2^166836872 is an apocalyptic number.

It is an amenable number.

166836872 is an abundant number, since it is smaller than the sum of its proper divisors (171605428).

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

166836872 is a wasteful number, since it uses less digits than its factorization.

166836872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1494 (or 1471 counting only the distinct ones).

The product of its digits is 580608, while the sum is 47.

The square root of 166836872 is about 12916.5348294347. The cubic root of 166836872 is about 550.5084796237.

The spelling of 166836872 in words is "one hundred sixty-six million, eight hundred thirty-six thousand, eight hundred seventy-two".