85865369 has 4 divisors (see below), whose sum is σ = 87273060. Its totient is φ = 84457680.

The previous prime is 85865363. The next prime is 85865383. The reversal of 85865369 is 96356858.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 15523600 + 70341769 = 3940^2 + 8387^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-85865369 is a prime.

It is a super-2 number, since 2×85865369² = 14745723187012322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (85865363) 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, 703754 + ... + 703875.

It is an arithmetic number, because the mean of its divisors is an integer number (21818265).

Almost surely, 2^85865369 is an apocalyptic number.

It is an amenable number.

85865369 is a deficient number, since it is larger than the sum of its proper divisors (1407691).

85865369 is a wasteful number, since it uses less digits than its factorization.

85865369 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1407690.

The product of its digits is 1555200, while the sum is 50.

The square root of 85865369 is about 9266.3568353480. The cubic root of 85865369 is about 441.1700418748.

The spelling of 85865369 in words is "eighty-five million, eight hundred sixty-five thousand, three hundred sixty-nine".