87566766 has 32 divisors (see below), whose sum is σ = 201177600. Its totient is φ = 24890976.

The previous prime is 87566741. The next prime is 87566777. The reversal of 87566766 is 66766578.

It is a happy number.

It is a Curzon number.

It is a congruent number.

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 15 ways as a sum of consecutive naturals, for example, 3120 + ... + 13596.

It is an arithmetic number, because the mean of its divisors is an integer number (6286800).

Almost surely, 2^87566766 is an apocalyptic number.

87566766 is an abundant number, since it is smaller than the sum of its proper divisors (113610834).

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

87566766 is a wasteful number, since it uses less digits than its factorization.

87566766 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10688.

The product of its digits is 2540160, while the sum is 51.

The square root of 87566766 is about 9357.7115792270. The cubic root of 87566766 is about 444.0648898748.

The spelling of 87566766 in words is "eighty-seven million, five hundred sixty-six thousand, seven hundred sixty-six".