172960665 has 16 divisors (see below), whose sum is σ = 278919168. Its totient is φ = 91518336.

The previous prime is 172960657. The next prime is 172960679. The reversal of 172960665 is 566069271.

It is not a de Polignac number, because 172960665 - 2³ = 172960657 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 43492 + ... + 47301.

It is an arithmetic number, because the mean of its divisors is an integer number (17432448).

Almost surely, 2^172960665 is an apocalyptic number.

172960665 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

172960665 is a deficient number, since it is larger than the sum of its proper divisors (105958503).

172960665 is a wasteful number, since it uses less digits than its factorization.

172960665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 90928.

The product of its (nonzero) digits is 136080, while the sum is 42.

The square root of 172960665 is about 13151.4510606245. The cubic root of 172960665 is about 557.1632317617.

The spelling of 172960665 in words is "one hundred seventy-two million, nine hundred sixty thousand, six hundred sixty-five".