85065797 has 2 divisors, whose sum is σ = 85065798. Its totient is φ = 85065796.

The previous prime is 85065791. The next prime is 85065809. The reversal of 85065797 is 79756058.

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., 83429956 + 1635841 = 9134^2 + 1279^2 .

It is a cyclic number.

It is not a de Polignac number, because 85065797 - 2¹⁰ = 85064773 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (85065791) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42532898 + 42532899.

It is an arithmetic number, because the mean of its divisors is an integer number (42532899).

Almost surely, 2^85065797 is an apocalyptic number.

It is an amenable number.

85065797 is a deficient number, since it is larger than the sum of its proper divisors (1).

85065797 is an equidigital number, since it uses as much as digits as its factorization.

85065797 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 529200, while the sum is 47.

The square root of 85065797 is about 9223.1121103454. The cubic root of 85065797 is about 439.7963882304.

The spelling of 85065797 in words is "eighty-five million, sixty-five thousand, seven hundred ninety-seven".