87777876 has 12 divisors (see below), whose sum is σ = 204815072. Its totient is φ = 29259288.

The previous prime is 87777869. The next prime is 87777883. The reversal of 87777876 is 67877778.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (87777869) and next prime (87777883).

It is a tau number, because it is divible by the number of its divisors (12).

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 3 ways as a sum of consecutive naturals, for example, 3657400 + ... + 3657423.

Almost surely, 2^87777876 is an apocalyptic number.

It is an amenable number.

87777876 is an abundant number, since it is smaller than the sum of its proper divisors (117037196).

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

87777876 is a wasteful number, since it uses less digits than its factorization.

87777876 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7314830 (or 7314828 counting only the distinct ones).

The product of its digits is 6453888, while the sum is 57.

The square root of 87777876 is about 9368.9847902534. The cubic root of 87777876 is about 444.4214608578.

It can be divided in two parts, 8777 and 7876, that added together give a triangular number (16653 = T₁₈₂).

The spelling of 87777876 in words is "eighty-seven million, seven hundred seventy-seven thousand, eight hundred seventy-six".