87571860 has 24 divisors (see below), whose sum is σ = 245201376. Its totient is φ = 23352480.

The previous prime is 87571843. The next prime is 87571901. The reversal of 87571860 is 6817578.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 729706 + ... + 729825.

It is an arithmetic number, because the mean of its divisors is an integer number (10216724).

Almost surely, 2^87571860 is an apocalyptic number.

It is an amenable number.

87571860 is an abundant number, since it is smaller than the sum of its proper divisors (157629516).

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

87571860 is a wasteful number, since it uses less digits than its factorization.

87571860 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1459543 (or 1459541 counting only the distinct ones).

The product of its (nonzero) digits is 94080, while the sum is 42.

The square root of 87571860 is about 9357.9837571990. The cubic root of 87571860 is about 444.0735005338.

The spelling of 87571860 in words is "eighty-seven million, five hundred seventy-one thousand, eight hundred sixty".