86743213 has 2 divisors, whose sum is σ = 86743214. Its totient is φ = 86743212.

The previous prime is 86743183. The next prime is 86743253. The reversal of 86743213 is 31234768.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 60559524 + 26183689 = 7782^2 + 5117^2 .

It is a cyclic number.

It is not a de Polignac number, because 86743213 - 2⁹ = 86742701 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (86743253) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43371606 + 43371607.

It is an arithmetic number, because the mean of its divisors is an integer number (43371607).

Almost surely, 2^86743213 is an apocalyptic number.

It is an amenable number.

86743213 is a deficient number, since it is larger than the sum of its proper divisors (1).

86743213 is an equidigital number, since it uses as much as digits as its factorization.

86743213 is an evil number, because the sum of its binary digits is even.

The product of its digits is 24192, while the sum is 34.

The square root of 86743213 is about 9313.6036527222. The cubic root of 86743213 is about 442.6683802791.

The spelling of 86743213 in words is "eighty-six million, seven hundred forty-three thousand, two hundred thirteen".