86808687 has 16 divisors (see below), whose sum is σ = 136842240. Its totient is φ = 47894112.

The previous prime is 86808679. The next prime is 86808703. The reversal of 86808687 is 78680868.

It is not a de Polignac number, because 86808687 - 2³ = 86808679 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (86800687) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 70663 + ... + 71880.

It is an arithmetic number, because the mean of its divisors is an integer number (8552640).

Almost surely, 2^86808687 is an apocalyptic number.

86808687 is a gapful number since it is divisible by the number (87) formed by its first and last digit.

86808687 is a deficient number, since it is larger than the sum of its proper divisors (50033553).

86808687 is a wasteful number, since it uses less digits than its factorization.

86808687 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 142582.

The product of its (nonzero) digits is 1032192, while the sum is 51.

The square root of 86808687 is about 9317.1179556771. The cubic root of 86808687 is about 442.7797280121.

The spelling of 86808687 in words is "eighty-six million, eight hundred eight thousand, six hundred eighty-seven".