985995565 has 4 divisors (see below), whose sum is σ = 1183194684. Its totient is φ = 788796448.

The previous prime is 985995553. The next prime is 985995581. The reversal of 985995565 is 565599589.

985995565 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 627953481 + 358042084 = 25059^2 + 18922^2 .

It is a cyclic number.

It is not a de Polignac number, because 985995565 - 2¹⁵ = 985962797 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 98599552 + ... + 98599561.

It is an arithmetic number, because the mean of its divisors is an integer number (295798671).

Almost surely, 2^985995565 is an apocalyptic number.

It is an amenable number.

985995565 is a deficient number, since it is larger than the sum of its proper divisors (197199119).

985995565 is a wasteful number, since it uses less digits than its factorization.

985995565 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 197199118.

The product of its digits is 21870000, while the sum is 61.

The square root of 985995565 is about 31400.5663165491. The cubic root of 985995565 is about 995.3098922792.

The spelling of 985995565 in words is "nine hundred eighty-five million, nine hundred ninety-five thousand, five hundred sixty-five".