172364660 has 24 divisors (see below), whose sum is σ = 389809896. Its totient is φ = 63642240.

The previous prime is 172364657. The next prime is 172364701. The reversal of 172364660 is 66463271.

It can be written as a sum of positive squares in 4 ways, for example, as 2427364 + 169937296 = 1558^2 + 13036^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 172364660.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 331211 + ... + 331730.

It is an arithmetic number, because the mean of its divisors is an integer number (16242079).

Almost surely, 2^172364660 is an apocalyptic number.

172364660 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

172364660 is an abundant number, since it is smaller than the sum of its proper divisors (217445236).

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

172364660 is a wasteful number, since it uses less digits than its factorization.

172364660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 662963 (or 662961 counting only the distinct ones).

The product of its (nonzero) digits is 36288, while the sum is 35.

The square root of 172364660 is about 13128.7722198231. The cubic root of 172364660 is about 556.5225191604.

The spelling of 172364660 in words is "one hundred seventy-two million, three hundred sixty-four thousand, six hundred sixty".