85306913 has 2 divisors, whose sum is σ = 85306914. Its totient is φ = 85306912.

The previous prime is 85306909. The next prime is 85306957. The reversal of 85306913 is 31960358.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 84511249 + 795664 = 9193^2 + 892^2 .

It is a cyclic number.

It is not a de Polignac number, because 85306913 - 2² = 85306909 is a prime.

It is not a weakly prime, because it can be changed into another prime (85306973) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42653456 + 42653457.

It is an arithmetic number, because the mean of its divisors is an integer number (42653457).

Almost surely, 2^85306913 is an apocalyptic number.

It is an amenable number.

85306913 is a deficient number, since it is larger than the sum of its proper divisors (1).

85306913 is an equidigital number, since it uses as much as digits as its factorization.

85306913 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 19440, while the sum is 35.

The square root of 85306913 is about 9236.1741538366. The cubic root of 85306913 is about 440.2115253612.

The spelling of 85306913 in words is "eighty-five million, three hundred six thousand, nine hundred thirteen".