85305697 has 2 divisors, whose sum is σ = 85305698. Its totient is φ = 85305696.

The previous prime is 85305667. The next prime is 85305709. The reversal of 85305697 is 79650358.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 47900241 + 37405456 = 6921^2 + 6116^2 .

It is a cyclic number.

It is not a de Polignac number, because 85305697 - 2⁷ = 85305569 is a prime.

It is not a weakly prime, because it can be changed into another prime (85305607) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42652848 + 42652849.

It is an arithmetic number, because the mean of its divisors is an integer number (42652849).

Almost surely, 2^85305697 is an apocalyptic number.

It is an amenable number.

85305697 is a deficient number, since it is larger than the sum of its proper divisors (1).

85305697 is an equidigital number, since it uses as much as digits as its factorization.

85305697 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 226800, while the sum is 43.

The square root of 85305697 is about 9236.1083254799. The cubic root of 85305697 is about 440.2094336989.

The spelling of 85305697 in words is "eighty-five million, three hundred five thousand, six hundred ninety-seven".