85266613 has 2 divisors, whose sum is σ = 85266614. Its totient is φ = 85266612.

The previous prime is 85266607. The next prime is 85266617. The reversal of 85266613 is 31666258.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 46553329 + 38713284 = 6823^2 + 6222^2 .

It is a cyclic number.

It is not a de Polignac number, because 85266613 - 2⁵ = 85266581 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (85266617) 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, 42633306 + 42633307.

It is an arithmetic number, because the mean of its divisors is an integer number (42633307).

Almost surely, 2^85266613 is an apocalyptic number.

It is an amenable number.

85266613 is a deficient number, since it is larger than the sum of its proper divisors (1).

85266613 is an equidigital number, since it uses as much as digits as its factorization.

85266613 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 51840, while the sum is 37.

The square root of 85266613 is about 9233.9922568735. The cubic root of 85266613 is about 440.1421940562.

The spelling of 85266613 in words is "eighty-five million, two hundred sixty-six thousand, six hundred thirteen".