86891712 has 56 divisors (see below), whose sum is σ = 242011200. Its totient is φ = 27438336.

The previous prime is 86891711. The next prime is 86891737. The reversal of 86891712 is 21719868.

It is a super-2 number, since 2×86891712² = 15100339228581888, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (86891711) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8262 + ... + 15557.

Almost surely, 2^86891712 is an apocalyptic number.

It is an amenable number.

86891712 is an abundant number, since it is smaller than the sum of its proper divisors (155119488).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

86891712 is a wasteful number, since it uses less digits than its factorization.

86891712 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23853 (or 23843 counting only the distinct ones).

The product of its digits is 48384, while the sum is 42.

The square root of 86891712 is about 9321.5723995472. The cubic root of 86891712 is about 442.9208432030.

It can be divided in two parts, 8689 and 1712, that added together give a palindrome (10401).

The spelling of 86891712 in words is "eighty-six million, eight hundred ninety-one thousand, seven hundred twelve".