172808693 has 4 divisors (see below), whose sum is σ = 173119500. Its totient is φ = 172498444.

The previous prime is 172808681. The next prime is 172808737. The reversal of 172808693 is 396808271.

The cubic root of 172808693 is 557.

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

It can be written as a sum of positive squares in 2 ways, for example, as 18601969 + 154206724 = 4313^2 + 12418^2 .

It is not a de Polignac number, because 172808693 - 2⁸ = 172808437 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (172808633) 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, 309971 + ... + 310527.

It is an arithmetic number, because the mean of its divisors is an integer number (43279875).

Almost surely, 2^172808693 is an apocalyptic number.

It is an amenable number.

172808693 is a deficient number, since it is larger than the sum of its proper divisors (310807).

172808693 is an frugal number, since it uses more digits than its factorization.

172808693 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1671 (or 557 counting only the distinct ones).

The product of its (nonzero) digits is 145152, while the sum is 44.

The square root of 172808693 is about 13145.6720254234.

The spelling of 172808693 in words is "one hundred seventy-two million, eight hundred eight thousand, six hundred ninety-three".