72185163 has 8 divisors (see below), whose sum is σ = 96949968. Its totient is φ = 47771904.

The previous prime is 72185137. The next prime is 72185171. The reversal of 72185163 is 36158127.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 72185163 - 2¹⁰ = 72184139 is a prime.

It is not an unprimeable number, because it can be changed into a prime (72184163) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 87406 + ... + 88227.

It is an arithmetic number, because the mean of its divisors is an integer number (12118746).

Almost surely, 2^72185163 is an apocalyptic number.

72185163 is a deficient number, since it is larger than the sum of its proper divisors (24764805).

72185163 is a wasteful number, since it uses less digits than its factorization.

72185163 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 175773.

The product of its digits is 10080, while the sum is 33.

The square root of 72185163 is about 8496.1852027837. The cubic root of 72185163 is about 416.3730839284.

The spelling of 72185163 in words is "seventy-two million, one hundred eighty-five thousand, one hundred sixty-three".