172652865 has 64 divisors (see below), whose sum is σ = 348751872. Its totient is φ = 70848000.

The previous prime is 172652861. The next prime is 172652897. The reversal of 172652865 is 568256271.

It is not a de Polignac number, because 172652865 - 2² = 172652861 is a prime.

It is not an unprimeable number, because it can be changed into a prime (172652861) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 94965 + ... + 96765.

It is an arithmetic number, because the mean of its divisors is an integer number (5449248).

Almost surely, 2^172652865 is an apocalyptic number.

172652865 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

172652865 is an abundant number, since it is smaller than the sum of its proper divisors (176099007).

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

172652865 is a wasteful number, since it uses less digits than its factorization.

172652865 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1910.

The product of its digits is 201600, while the sum is 42.

The square root of 172652865 is about 13139.7437189619. The cubic root of 172652865 is about 556.8325271399.

The spelling of 172652865 in words is "one hundred seventy-two million, six hundred fifty-two thousand, eight hundred sixty-five".