86186213 has 2 divisors, whose sum is σ = 86186214. Its totient is φ = 86186212.

The previous prime is 86186201. The next prime is 86186237. The reversal of 86186213 is 31268168.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 57047809 + 29138404 = 7553^2 + 5398^2 .

It is a cyclic number.

It is not a de Polignac number, because 86186213 - 2¹⁶ = 86120677 is a prime.

It is a super-2 number, since 2×86186213² = 14856126622562738, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (86186263) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43093106 + 43093107.

It is an arithmetic number, because the mean of its divisors is an integer number (43093107).

Almost surely, 2^86186213 is an apocalyptic number.

It is an amenable number.

86186213 is a deficient number, since it is larger than the sum of its proper divisors (1).

86186213 is an equidigital number, since it uses as much as digits as its factorization.

86186213 is an evil number, because the sum of its binary digits is even.

The product of its digits is 13824, while the sum is 35.

The square root of 86186213 is about 9283.6529986854. The cubic root of 86186213 is about 441.7188499555.

The spelling of 86186213 in words is "eighty-six million, one hundred eighty-six thousand, two hundred thirteen".