87856776 has 96 divisors (see below), whose sum is σ = 281361600. Its totient is φ = 24232320.

The previous prime is 87856763. The next prime is 87856781. The reversal of 87856776 is 67765878.

87856776 is a `hidden beast` number, since 8 + 7 + 8 + 567 + 76 = 666.

It is a super-2 number, since 2×87856776² = 15437626178228352, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 11611 + ... + 17621.

It is an arithmetic number, because the mean of its divisors is an integer number (2930850).

Almost surely, 2^87856776 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 87856776, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (140680800).

87856776 is an abundant number, since it is smaller than the sum of its proper divisors (193504824).

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

87856776 is a wasteful number, since it uses less digits than its factorization.

87856776 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6059 (or 6052 counting only the distinct ones).

The product of its digits is 3951360, while the sum is 54.

The square root of 87856776 is about 9373.1945461513. The cubic root of 87856776 is about 444.5545785026.

The spelling of 87856776 in words is "eighty-seven million, eight hundred fifty-six thousand, seven hundred seventy-six".