87880580 has 12 divisors (see below), whose sum is σ = 184549260. Its totient is φ = 35152224.

The previous prime is 87880579. The next prime is 87880601. The reversal of 87880580 is 8508878.

It can be written as a sum of positive squares in 2 ways, for example, as 23367556 + 64513024 = 4834^2 + 8032^2 .

It is a super-3 number, since 3×87880580³ (a number of 25 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2196995 + ... + 2197034.

It is an arithmetic number, because the mean of its divisors is an integer number (15379105).

Almost surely, 2^87880580 is an apocalyptic number.

It is an amenable number.

87880580 is an abundant number, since it is smaller than the sum of its proper divisors (96668680).

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

87880580 is a wasteful number, since it uses less digits than its factorization.

87880580 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4394038 (or 4394036 counting only the distinct ones).

The product of its (nonzero) digits is 143360, while the sum is 44.

The square root of 87880580 is about 9374.4642513586. The cubic root of 87880580 is about 444.5947242265.

The spelling of 87880580 in words is "eighty-seven million, eight hundred eighty thousand, five hundred eighty".