87180986 has 8 divisors (see below), whose sum is σ = 131319360. Its totient is φ = 43407868.

The previous prime is 87180967. The next prime is 87180997. The reversal of 87180986 is 68908178.

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

It is a self number, because there is not a number n which added to its sum of digits gives 87180986.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 90716 + ... + 91671.

It is an arithmetic number, because the mean of its divisors is an integer number (16414920).

Almost surely, 2^87180986 is an apocalyptic number.

87180986 is a deficient number, since it is larger than the sum of its proper divisors (44138374).

87180986 is a wasteful number, since it uses less digits than its factorization.

87180986 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 182628.

The product of its (nonzero) digits is 193536, while the sum is 47.

The square root of 87180986 is about 9337.0758805956. The cubic root of 87180986 is about 443.4118127911.

The spelling of 87180986 in words is "eighty-seven million, one hundred eighty thousand, nine hundred eighty-six".