86601831 has 16 divisors (see below), whose sum is σ = 120870144. Its totient is φ = 55049984.

The previous prime is 86601797. The next prime is 86601839. The reversal of 86601831 is 13810668.

It is a cyclic number.

It is not a de Polignac number, because 86601831 - 2⁷ = 86601703 is a prime.

It is a super-2 number, since 2×86601831² = 14999754265105122, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 86601792 and 86601801.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (86601839) 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 15 ways as a sum of consecutive naturals, for example, 22135 + ... + 25751.

It is an arithmetic number, because the mean of its divisors is an integer number (7554384).

Almost surely, 2^86601831 is an apocalyptic number.

86601831 is a deficient number, since it is larger than the sum of its proper divisors (34268313).

86601831 is a wasteful number, since it uses less digits than its factorization.

86601831 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3990.

The product of its (nonzero) digits is 6912, while the sum is 33.

The square root of 86601831 is about 9306.0104771056. The cubic root of 86601831 is about 442.4277490641.

The spelling of 86601831 in words is "eighty-six million, six hundred one thousand, eight hundred thirty-one".