87166998 has 12 divisors (see below), whose sum is σ = 188861868. Its totient is φ = 29055660.

The previous prime is 87166997. The next prime is 87167023. The reversal of 87166998 is 89966178.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87166997) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2421288 + ... + 2421323.

It is an arithmetic number, because the mean of its divisors is an integer number (15738489).

Almost surely, 2^87166998 is an apocalyptic number.

87166998 is an abundant number, since it is smaller than the sum of its proper divisors (101694870).

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

87166998 is a wasteful number, since it uses less digits than its factorization.

87166998 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4842619 (or 4842616 counting only the distinct ones).

The product of its digits is 1306368, while the sum is 54.

The square root of 87166998 is about 9336.3267937664. The cubic root of 87166998 is about 443.3880967017.

The spelling of 87166998 in words is "eighty-seven million, one hundred sixty-six thousand, nine hundred ninety-eight".