86898531 has 16 divisors (see below), whose sum is σ = 122713344. Its totient is φ = 54583584.

The previous prime is 86898523. The next prime is 86898547. The reversal of 86898531 is 13589868.

It is not a de Polignac number, because 86898531 - 2³ = 86898523 is a prime.

It is a super-2 number, since 2×86898531² = 15102709379915922, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (86898521) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4776 + ... + 14021.

It is an arithmetic number, because the mean of its divisors is an integer number (7669584).

Almost surely, 2^86898531 is an apocalyptic number.

86898531 is a deficient number, since it is larger than the sum of its proper divisors (35814813).

86898531 is a wasteful number, since it uses less digits than its factorization.

86898531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18890.

The product of its digits is 414720, while the sum is 48.

The square root of 86898531 is about 9321.9381568427. The cubic root of 86898531 is about 442.9324292648.

It can be divided in two parts, 868 and 98531, that added together give a palindrome (99399).

The spelling of 86898531 in words is "eighty-six million, eight hundred ninety-eight thousand, five hundred thirty-one".