87186860 has 12 divisors (see below), whose sum is σ = 183092448. Its totient is φ = 34874736.

The previous prime is 87186851. The next prime is 87186871. The reversal of 87186860 is 6868178.

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, 2179652 + ... + 2179691.

It is an arithmetic number, because the mean of its divisors is an integer number (15257704).

Almost surely, 2^87186860 is an apocalyptic number.

It is an amenable number.

87186860 is an abundant number, since it is smaller than the sum of its proper divisors (95905588).

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

87186860 is a wasteful number, since it uses less digits than its factorization.

87186860 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4359352 (or 4359350 counting only the distinct ones).

The product of its (nonzero) digits is 129024, while the sum is 44.

The square root of 87186860 is about 9337.3904277373. The cubic root of 87186860 is about 443.4217711648.

The spelling of 87186860 in words is "eighty-seven million, one hundred eighty-six thousand, eight hundred sixty".