166936772 has 12 divisors (see below), whose sum is σ = 292282620. Its totient is φ = 83427456.

The previous prime is 166936771. The next prime is 166936807. The reversal of 166936772 is 277639661.

It is a happy number.

166936772 is digitally balanced in base 3, 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 49084036 + 117852736 = 7006^2 + 10856^2 .

It is a hoax number, since the sum of its digits (47) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (166936771) 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, 104 + ... + 18272.

It is an arithmetic number, because the mean of its divisors is an integer number (24356885).

Almost surely, 2^166936772 is an apocalyptic number.

It is an amenable number.

166936772 is a deficient number, since it is larger than the sum of its proper divisors (125345848).

166936772 is a wasteful number, since it uses less digits than its factorization.

166936772 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20470 (or 20468 counting only the distinct ones).

The product of its digits is 571536, while the sum is 47.

The square root of 166936772 is about 12920.4013869539. The cubic root of 166936772 is about 550.6183370814.

The spelling of 166936772 in words is "one hundred sixty-six million, nine hundred thirty-six thousand, seven hundred seventy-two".