87966978 has 16 divisors (see below), whose sum is σ = 191928096. Its totient is φ = 26656640.

The previous prime is 87966961. The next prime is 87967021.

87966978 is nontrivially palindromic in base 10.

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, 666351 + ... + 666482.

It is an arithmetic number, because the mean of its divisors is an integer number (11995506).

Almost surely, 2^87966978 is an apocalyptic number.

87966978 is an abundant number, since it is smaller than the sum of its proper divisors (103961118).

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

87966978 is a wasteful number, since it uses less digits than its factorization.

87966978 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1332849.

The product of its digits is 9144576, while the sum is 60.

The square root of 87966978 is about 9379.0712759846. The cubic root of 87966978 is about 444.7403745846.

The spelling of 87966978 in words is "eighty-seven million, nine hundred sixty-six thousand, nine hundred seventy-eight".