86318693 has 2 divisors, whose sum is σ = 86318694. Its totient is φ = 86318692.

The previous prime is 86318689. The next prime is 86318699. The reversal of 86318693 is 39681368.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 85803169 + 515524 = 9263^2 + 718^2 .

It is a cyclic number.

It is not a de Polignac number, because 86318693 - 2² = 86318689 is a prime.

It is a super-2 number, since 2×86318693² = 14901833522456498, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (86318699) 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 as a sum of consecutive naturals, namely, 43159346 + 43159347.

It is an arithmetic number, because the mean of its divisors is an integer number (43159347).

Almost surely, 2^86318693 is an apocalyptic number.

It is an amenable number.

86318693 is a deficient number, since it is larger than the sum of its proper divisors (1).

86318693 is an equidigital number, since it uses as much as digits as its factorization.

86318693 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 186624, while the sum is 44.

The square root of 86318693 is about 9290.7853812259. The cubic root of 86318693 is about 441.9450615227.

The spelling of 86318693 in words is "eighty-six million, three hundred eighteen thousand, six hundred ninety-three".