87766677 has 12 divisors (see below), whose sum is σ = 128030604. Its totient is φ = 57931200.

The previous prime is 87766669. The next prime is 87766687. The reversal of 87766677 is 77666778.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 82192356 + 5574321 = 9066^2 + 2361^2 .

It is not a de Polignac number, because 87766677 - 2³ = 87766669 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87766687) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 47368 + ... + 49185.

It is an arithmetic number, because the mean of its divisors is an integer number (10669217).

Almost surely, 2^87766677 is an apocalyptic number.

It is an amenable number.

87766677 is a deficient number, since it is larger than the sum of its proper divisors (40263927).

87766677 is a wasteful number, since it uses less digits than its factorization.

87766677 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 96660 (or 96657 counting only the distinct ones).

The product of its digits is 4148928, while the sum is 54.

The square root of 87766677 is about 9368.3871077150. The cubic root of 87766677 is about 444.4025597867.

The spelling of 87766677 in words is "eighty-seven million, seven hundred sixty-six thousand, six hundred seventy-seven".