87816966 has 16 divisors (see below), whose sum is σ = 175791600. Its totient is φ = 29246048.

The previous prime is 87816941. The next prime is 87816973. The reversal of 87816966 is 66961878.

It is a happy number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1420 + ... + 13328.

It is an arithmetic number, because the mean of its divisors is an integer number (10986975).

Almost surely, 2^87816966 is an apocalyptic number.

87816966 is an abundant number, since it is smaller than the sum of its proper divisors (87974634).

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

87816966 is a wasteful number, since it uses less digits than its factorization.

87816966 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13143.

The product of its digits is 870912, while the sum is 51.

The square root of 87816966 is about 9371.0706965640. The cubic root of 87816966 is about 444.4874222652.

The spelling of 87816966 in words is "eighty-seven million, eight hundred sixteen thousand, nine hundred sixty-six".