87711768 has 32 divisors (see below), whose sum is σ = 243644400. Its totient is φ = 29237184.

The previous prime is 87711739. The next prime is 87711769. The reversal of 87711768 is 86711778.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87711769) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 202821 + ... + 203252.

Almost surely, 2^87711768 is an apocalyptic number.

It is an amenable number.

87711768 is an abundant number, since it is smaller than the sum of its proper divisors (155932632).

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

87711768 is a wasteful number, since it uses less digits than its factorization.

87711768 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 406088 (or 406078 counting only the distinct ones).

The product of its digits is 131712, while the sum is 45.

The square root of 87711768 is about 9365.4561020807. The cubic root of 87711768 is about 444.3098640487.

The spelling of 87711768 in words is "eighty-seven million, seven hundred eleven thousand, seven hundred sixty-eight".