87699870 has 24 divisors (see below), whose sum is σ = 228019896. Its totient is φ = 23386608.

The previous prime is 87699853. The next prime is 87699893. The reversal of 87699870 is 7899678.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 487132 + ... + 487311.

It is an arithmetic number, because the mean of its divisors is an integer number (9500829).

Almost surely, 2^87699870 is an apocalyptic number.

87699870 is an abundant number, since it is smaller than the sum of its proper divisors (140320026).

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

87699870 is a wasteful number, since it uses less digits than its factorization.

87699870 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 974456 (or 974453 counting only the distinct ones).

The product of its (nonzero) digits is 1524096, while the sum is 54.

The square root of 87699870 is about 9364.8208738876. The cubic root of 87699870 is about 444.2897731003.

The spelling of 87699870 in words is "eighty-seven million, six hundred ninety-nine thousand, eight hundred seventy".