85356613 has 2 divisors, whose sum is σ = 85356614. Its totient is φ = 85356612.

The previous prime is 85356589. The next prime is 85356631. The reversal of 85356613 is 31665358.

Together with next prime (85356631) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 74080449 + 11276164 = 8607^2 + 3358^2 .

It is a cyclic number.

It is not a de Polignac number, because 85356613 - 2²⁵ = 51802181 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (85350613) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42678306 + 42678307.

It is an arithmetic number, because the mean of its divisors is an integer number (42678307).

Almost surely, 2^85356613 is an apocalyptic number.

It is an amenable number.

85356613 is a deficient number, since it is larger than the sum of its proper divisors (1).

85356613 is an equidigital number, since it uses as much as digits as its factorization.

85356613 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 64800, while the sum is 37.

The square root of 85356613 is about 9238.8642700280. The cubic root of 85356613 is about 440.2969981738.

The spelling of 85356613 in words is "eighty-five million, three hundred fifty-six thousand, six hundred thirteen".