166804772 has 12 divisors (see below), whose sum is σ = 292639116. Its totient is φ = 83193600.

The previous prime is 166804753. The next prime is 166804801. The reversal of 166804772 is 277408661.

166804772 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 86415616 + 80389156 = 9296^2 + 8966^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 50393 + ... + 53600.

It is an arithmetic number, because the mean of its divisors is an integer number (24386593).

Almost surely, 2^166804772 is an apocalyptic number.

It is an amenable number.

166804772 is a deficient number, since it is larger than the sum of its proper divisors (125834344).

166804772 is a wasteful number, since it uses less digits than its factorization.

166804772 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 104398 (or 104396 counting only the distinct ones).

The product of its (nonzero) digits is 112896, while the sum is 41.

The square root of 166804772 is about 12915.2921763311. The cubic root of 166804772 is about 550.4731707709.

The spelling of 166804772 in words is "one hundred sixty-six million, eight hundred four thousand, seven hundred seventy-two".