86540933 has 6 divisors (see below), whose sum is σ = 89423622. Its totient is φ = 83748360.

The previous prime is 86540929. The next prime is 86540957. The reversal of 86540933 is 33904568.

It can be written as a sum of positive squares in only one way, i.e., 74269924 + 12271009 = 8618^2 + 3503^2 .

It is not a de Polignac number, because 86540933 - 2² = 86540929 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 (86540633) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 44066 + ... + 45987.

It is an arithmetic number, because the mean of its divisors is an integer number (14903937).

Almost surely, 2^86540933 is an apocalyptic number.

It is an amenable number.

86540933 is a deficient number, since it is larger than the sum of its proper divisors (2882689).

86540933 is an equidigital number, since it uses as much as digits as its factorization.

86540933 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 90115 (or 90084 counting only the distinct ones).

The product of its (nonzero) digits is 77760, while the sum is 38.

The square root of 86540933 is about 9302.7379303085. The cubic root of 86540933 is about 442.3240203761.

The spelling of 86540933 in words is "eighty-six million, five hundred forty thousand, nine hundred thirty-three".