172332863 has 4 divisors (see below), whose sum is σ = 176340648. Its totient is φ = 168325080.

The previous prime is 172332851. The next prime is 172332883. The reversal of 172332863 is 368233271.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 172332863 - 2⁴ = 172332847 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 (172332883) 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, 2003828 + ... + 2003913.

It is an arithmetic number, because the mean of its divisors is an integer number (44085162).

Almost surely, 2^172332863 is an apocalyptic number.

172332863 is a deficient number, since it is larger than the sum of its proper divisors (4007785).

172332863 is an equidigital number, since it uses as much as digits as its factorization.

172332863 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4007784.

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

The square root of 172332863 is about 13127.5611977244. The cubic root of 172332863 is about 556.4882955270.

The spelling of 172332863 in words is "one hundred seventy-two million, three hundred thirty-two thousand, eight hundred sixty-three".