87642860 has 12 divisors (see below), whose sum is σ = 184050048. Its totient is φ = 35057136.

The previous prime is 87642853. The next prime is 87642869. The reversal of 87642860 is 6824678.

It is not an unprimeable number, because it can be changed into a prime (87642869) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2191052 + ... + 2191091.

It is an arithmetic number, because the mean of its divisors is an integer number (15337504).

Almost surely, 2^87642860 is an apocalyptic number.

It is an amenable number.

87642860 is an abundant number, since it is smaller than the sum of its proper divisors (96407188).

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

87642860 is a wasteful number, since it uses less digits than its factorization.

87642860 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4382152 (or 4382150 counting only the distinct ones).

The product of its (nonzero) digits is 129024, while the sum is 41.

The square root of 87642860 is about 9361.7765408068. The cubic root of 87642860 is about 444.1934808619.

The spelling of 87642860 in words is "eighty-seven million, six hundred forty-two thousand, eight hundred sixty".