86988501 has 12 divisors (see below), whose sum is σ = 127710700. Its totient is φ = 57041280.

The previous prime is 86988497. The next prime is 86988521. The reversal of 86988501 is 10588968.

86988501 is a `hidden beast` number, since 8 + 69 + 88 + 501 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 9090225 + 77898276 = 3015^2 + 8826^2 .

It is not a de Polignac number, because 86988501 - 2² = 86988497 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (86988521) 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, 78676 + ... + 79773.

Almost surely, 2^86988501 is an apocalyptic number.

It is an amenable number.

86988501 is a deficient number, since it is larger than the sum of its proper divisors (40722199).

86988501 is a wasteful number, since it uses less digits than its factorization.

86988501 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 158516 (or 158513 counting only the distinct ones).

The product of its (nonzero) digits is 138240, while the sum is 45.

The square root of 86988501 is about 9326.7626216174. The cubic root of 86988501 is about 443.0852392339.

The spelling of 86988501 in words is "eighty-six million, nine hundred eighty-eight thousand, five hundred one".