87918963 has 12 divisors (see below), whose sum is σ = 128851464. Its totient is φ = 53284000.

The previous prime is 87918959. The next prime is 87918977. The reversal of 87918963 is 36981978.

It is not a de Polignac number, because 87918963 - 2² = 87918959 is a prime.

It is not an unprimeable number, because it can be changed into a prime (87918953) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 120738 + ... + 121463.

It is an arithmetic number, because the mean of its divisors is an integer number (10737622).

Almost surely, 2^87918963 is an apocalyptic number.

87918963 is a deficient number, since it is larger than the sum of its proper divisors (40932501).

87918963 is a wasteful number, since it uses less digits than its factorization.

87918963 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 242226 (or 242215 counting only the distinct ones).

The product of its digits is 653184, while the sum is 51.

The square root of 87918963 is about 9376.5112381952. The cubic root of 87918963 is about 444.6594423378.

The spelling of 87918963 in words is "eighty-seven million, nine hundred eighteen thousand, nine hundred sixty-three".