85365613 has 4 divisors (see below), whose sum is σ = 89858560. Its totient is φ = 80872668.

The previous prime is 85365611. The next prime is 85365617. The reversal of 85365613 is 31656358.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 31656358 = 2 ⋅15828179.

It is a cyclic number.

It is not a de Polignac number, because 85365613 - 2¹ = 85365611 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85365611) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2246445 + ... + 2246482.

It is an arithmetic number, because the mean of its divisors is an integer number (22464640).

Almost surely, 2^85365613 is an apocalyptic number.

It is an amenable number.

85365613 is a deficient number, since it is larger than the sum of its proper divisors (4492947).

85365613 is a wasteful number, since it uses less digits than its factorization.

85365613 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4492946.

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

The square root of 85365613 is about 9239.3513300448. The cubic root of 85365613 is about 440.3124725996.

It can be divided in two parts, 853 and 65613, that added together give a palindrome (66466).

The spelling of 85365613 in words is "eighty-five million, three hundred sixty-five thousand, six hundred thirteen".