87061580 has 48 divisors (see below), whose sum is σ = 188244000. Its totient is φ = 33808896.

The previous prime is 87061529. The next prime is 87061613. The reversal of 87061580 is 8516078.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 87061580.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 104606 + ... + 105434.

It is an arithmetic number, because the mean of its divisors is an integer number (3921750).

Almost surely, 2^87061580 is an apocalyptic number.

It is an amenable number.

87061580 is an abundant number, since it is smaller than the sum of its proper divisors (101182420).

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

87061580 is a wasteful number, since it uses less digits than its factorization.

87061580 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 986 (or 984 counting only the distinct ones).

The product of its (nonzero) digits is 13440, while the sum is 35.

The square root of 87061580 is about 9330.6795036589. The cubic root of 87061580 is about 443.2092830731.

The spelling of 87061580 in words is "eighty-seven million, sixty-one thousand, five hundred eighty".