172626164 has 12 divisors (see below), whose sum is σ = 310260804. Its totient is φ = 83980224.

The previous prime is 172626163. The next prime is 172626169. The reversal of 172626164 is 461626271.

172626164 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 122102500 + 50523664 = 11050^2 + 7108^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (172626163) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 583049 + ... + 583344.

It is an arithmetic number, because the mean of its divisors is an integer number (25855067).

Almost surely, 2^172626164 is an apocalyptic number.

It is an amenable number.

172626164 is a deficient number, since it is larger than the sum of its proper divisors (137634640).

172626164 is a wasteful number, since it uses less digits than its factorization.

172626164 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1166434 (or 1166432 counting only the distinct ones).

The product of its digits is 24192, while the sum is 35.

The square root of 172626164 is about 13138.7276400723. The cubic root of 172626164 is about 556.8038206912.

The spelling of 172626164 in words is "one hundred seventy-two million, six hundred twenty-six thousand, one hundred sixty-four".