87612173 has 12 divisors (see below), whose sum is σ = 100876608. Its totient is φ = 75452040.

The previous prime is 87612139. The next prime is 87612179. The reversal of 87612173 is 37121678.

It is not a de Polignac number, because 87612173 - 2⁸ = 87611917 is a prime.

It is a Smith number, since the sum of its digits (35) coincides with the sum of the digits of its prime factors.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87612179) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7061 + ... + 15002.

It is an arithmetic number, because the mean of its divisors is an integer number (8406384).

Almost surely, 2^87612173 is an apocalyptic number.

It is an amenable number.

87612173 is a deficient number, since it is larger than the sum of its proper divisors (13264435).

87612173 is a wasteful number, since it uses less digits than its factorization.

87612173 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22112 (or 22093 counting only the distinct ones).

The product of its digits is 14112, while the sum is 35.

The square root of 87612173 is about 9360.1374455720. The cubic root of 87612173 is about 444.1416319660.

The spelling of 87612173 in words is "eighty-seven million, six hundred twelve thousand, one hundred seventy-three".