87170540 has 12 divisors (see below), whose sum is σ = 183058176. Its totient is φ = 34868208.

The previous prime is 87170539. The next prime is 87170563. The reversal of 87170540 is 4507178.

It is a junction number, because it is equal to n+sod(n) for n = 87170497 and 87170506.

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, 2179244 + ... + 2179283.

It is an arithmetic number, because the mean of its divisors is an integer number (15254848).

Almost surely, 2^87170540 is an apocalyptic number.

It is an amenable number.

87170540 is an abundant number, since it is smaller than the sum of its proper divisors (95887636).

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

87170540 is a wasteful number, since it uses less digits than its factorization.

87170540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4358536 (or 4358534 counting only the distinct ones).

The product of its (nonzero) digits is 7840, while the sum is 32.

The square root of 87170540 is about 9336.5164810008. The cubic root of 87170540 is about 443.3941022596.

The spelling of 87170540 in words is "eighty-seven million, one hundred seventy thousand, five hundred forty".