87620860 has 12 divisors (see below), whose sum is σ = 184003848. Its totient is φ = 35048336.

The previous prime is 87620857. The next prime is 87620881. The reversal of 87620860 is 6802678.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2190502 + ... + 2190541.

It is an arithmetic number, because the mean of its divisors is an integer number (15333654).

Almost surely, 2^87620860 is an apocalyptic number.

It is an amenable number.

87620860 is an abundant number, since it is smaller than the sum of its proper divisors (96382988).

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

87620860 is a wasteful number, since it uses less digits than its factorization.

87620860 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4381052 (or 4381050 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 37.

The square root of 87620860 is about 9360.6014764010. The cubic root of 87620860 is about 444.1563107894.

It can be divided in two parts, 876 and 20860, that added together give a triangular number (21736 = T₂₀₈).

The spelling of 87620860 in words is "eighty-seven million, six hundred twenty thousand, eight hundred sixty".