87650680 has 32 divisors (see below), whose sum is σ = 212385600. Its totient is φ = 32363136.

The previous prime is 87650663. The next prime is 87650683. The reversal of 87650680 is 8605678.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87650683) 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, 83760 + ... + 84799.

It is an arithmetic number, because the mean of its divisors is an integer number (6637050).

Almost surely, 2^87650680 is an apocalyptic number.

It is an amenable number.

87650680 is an abundant number, since it is smaller than the sum of its proper divisors (124734920).

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

87650680 is a wasteful number, since it uses less digits than its factorization.

87650680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 168583 (or 168579 counting only the distinct ones).

The product of its (nonzero) digits is 80640, while the sum is 40.

The square root of 87650680 is about 9362.1941872619. The cubic root of 87650680 is about 444.2066916346.

The spelling of 87650680 in words is "eighty-seven million, six hundred fifty thousand, six hundred eighty".