172084863 has 16 divisors (see below), whose sum is σ = 244048896. Its totient is φ = 107483520.

The previous prime is 172084837. The next prime is 172084867. The reversal of 172084863 is 368480271.

It is not a de Polignac number, because 172084863 - 2⁸ = 172084607 is a prime.

It is a super-2 number, since 2×172084863² = 59226400147457538, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (172084867) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3808 + ... + 18938.

It is an arithmetic number, because the mean of its divisors is an integer number (15253056).

Almost surely, 2^172084863 is an apocalyptic number.

172084863 is a deficient number, since it is larger than the sum of its proper divisors (71964033).

172084863 is a wasteful number, since it uses less digits than its factorization.

172084863 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15374.

The product of its (nonzero) digits is 64512, while the sum is 39.

The square root of 172084863 is about 13118.1120211713. The cubic root of 172084863 is about 556.2212244846.

The spelling of 172084863 in words is "one hundred seventy-two million, eighty-four thousand, eight hundred sixty-three".