172370641 has 9 divisors (see below), whose sum is σ = 182183913. Its totient is φ = 163062180.

The previous prime is 172370629. The next prime is 172370657. The reversal of 172370641 is 146073271.

The square root of 172370641 is 13129.

It is a perfect power (a square), and thus also a powerful number.

It is not a de Polignac number, because 172370641 - 2⁵ = 172370609 is a prime.

It is not an unprimeable number, because it can be changed into a prime (172370141) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 249106 + ... + 249796.

It is an arithmetic number, because the mean of its divisors is an integer number (20242657).

Almost surely, 2^172370641 is an apocalyptic number.

172370641 is the 13129-th square number.

172370641 is the 6565-th centered octagonal number.

It is an amenable number.

172370641 is a deficient number, since it is larger than the sum of its proper divisors (9813272).

172370641 is an frugal number, since it uses more digits than its factorization.

172370641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1420 (or 710 counting only the distinct ones).

The product of its (nonzero) digits is 7056, while the sum is 31.

The cubic root of 172370641 is about 556.5289561386.

Multiplying 172370641 by its product of nonzero digits (7056), we get a square (1216247242896 = 1102836²).

The spelling of 172370641 in words is "one hundred seventy-two million, three hundred seventy thousand, six hundred forty-one".