87756916 has 12 divisors (see below), whose sum is σ = 165388132. Its totient is φ = 40503168.

The previous prime is 87756899. The next prime is 87756919. The reversal of 87756916 is 61965778.

It can be written as a sum of positive squares in 2 ways, for example, as 38812900 + 48944016 = 6230^2 + 6996^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 87756916.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87756919) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 843765 + ... + 843868.

Almost surely, 2^87756916 is an apocalyptic number.

It is an amenable number.

87756916 is a deficient number, since it is larger than the sum of its proper divisors (77631216).

87756916 is a wasteful number, since it uses less digits than its factorization.

87756916 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1687650 (or 1687648 counting only the distinct ones).

The product of its digits is 635040, while the sum is 49.

The square root of 87756916 is about 9367.8661390949. The cubic root of 87756916 is about 444.3860843834.

The spelling of 87756916 in words is "eighty-seven million, seven hundred fifty-six thousand, nine hundred sixteen".