87266580 has 24 divisors (see below), whose sum is σ = 244346592. Its totient is φ = 23271072.

The previous prime is 87266579. The next prime is 87266587. The reversal of 87266580 is 8566278.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87266587) 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, 727162 + ... + 727281.

It is an arithmetic number, because the mean of its divisors is an integer number (10181108).

Almost surely, 2^87266580 is an apocalyptic number.

It is an amenable number.

87266580 is an abundant number, since it is smaller than the sum of its proper divisors (157080012).

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

87266580 is a wasteful number, since it uses less digits than its factorization.

87266580 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1454455 (or 1454453 counting only the distinct ones).

The product of its (nonzero) digits is 161280, while the sum is 42.

The square root of 87266580 is about 9341.6583110281. The cubic root of 87266580 is about 443.5568787372.

The spelling of 87266580 in words is "eighty-seven million, two hundred sixty-six thousand, five hundred eighty".