87678986 has 16 divisors (see below), whose sum is σ = 133818048. Its totient is φ = 43077600.

The previous prime is 87678971. The next prime is 87678991. The reversal of 87678986 is 68987678.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 44441 + ... + 46371.

It is an arithmetic number, because the mean of its divisors is an integer number (8363628).

Almost surely, 2^87678986 is an apocalyptic number.

87678986 is a deficient number, since it is larger than the sum of its proper divisors (46139062).

87678986 is a wasteful number, since it uses less digits than its factorization.

87678986 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2317.

The product of its digits is 8128512, while the sum is 59.

The square root of 87678986 is about 9363.7057835026. The cubic root of 87678986 is about 444.2545040088.

The spelling of 87678986 in words is "eighty-seven million, six hundred seventy-eight thousand, nine hundred eighty-six".