87696987 has 32 divisors (see below), whose sum is σ = 136304640. Its totient is φ = 49123200.

The previous prime is 87696967. The next prime is 87697003. The reversal of 87696987 is 78969678.

It is not a de Polignac number, because 87696987 - 2⁷ = 87696859 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a self number, because there is not a number n which added to its sum of digits gives 87696987.

It is not an unprimeable number, because it can be changed into a prime (87696937) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 366814 + ... + 367052.

It is an arithmetic number, because the mean of its divisors is an integer number (4259520).

Almost surely, 2^87696987 is an apocalyptic number.

87696987 is a deficient number, since it is larger than the sum of its proper divisors (48607653).

87696987 is a wasteful number, since it uses less digits than its factorization.

87696987 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 523.

The product of its digits is 9144576, while the sum is 60.

The square root of 87696987 is about 9364.6669454925. Note that the first 3 decimals coincide. The cubic root of 87696987 is about 444.2849045965.

The spelling of 87696987 in words is "eighty-seven million, six hundred ninety-six thousand, nine hundred eighty-seven".