87040764 has 24 divisors (see below), whose sum is σ = 225661520. Its totient is φ = 29013552.

The previous prime is 87040739. The next prime is 87040813. The reversal of 87040764 is 46704078.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 402859 + ... + 403074.

Almost surely, 2^87040764 is an apocalyptic number.

It is an amenable number.

87040764 is an abundant number, since it is smaller than the sum of its proper divisors (138620756).

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

87040764 is a wasteful number, since it uses less digits than its factorization.

87040764 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 805946 (or 805938 counting only the distinct ones).

The product of its (nonzero) digits is 37632, while the sum is 36.

The square root of 87040764 is about 9329.5639769498. The cubic root of 87040764 is about 443.1739571968.

The spelling of 87040764 in words is "eighty-seven million, forty thousand, seven hundred sixty-four".