87165222 has 32 divisors (see below), whose sum is σ = 186434784. Its totient is φ = 27072000.

The previous prime is 87165187. The next prime is 87165227. The reversal of 87165222 is 22256178.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87165227) 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, 6072 + ... + 14532.

It is an arithmetic number, because the mean of its divisors is an integer number (5826087).

Almost surely, 2^87165222 is an apocalyptic number.

87165222 is an abundant number, since it is smaller than the sum of its proper divisors (99269562).

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

87165222 is a wasteful number, since it uses less digits than its factorization.

87165222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8584.

The product of its digits is 13440, while the sum is 33.

The square root of 87165222 is about 9336.2316809299. The cubic root of 87165222 is about 443.3850853838.

The spelling of 87165222 in words is "eighty-seven million, one hundred sixty-five thousand, two hundred twenty-two".