850557565 has 32 divisors (see below), whose sum is σ = 1206374400. Its totient is φ = 570922560.

The previous prime is 850557551. The next prime is 850557569. The reversal of 850557565 is 565755058.

It is not a de Polignac number, because 850557565 - 2⁹ = 850557053 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (850557569) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 117316 + ... + 124354.

It is an arithmetic number, because the mean of its divisors is an integer number (37699200).

Almost surely, 2^850557565 is an apocalyptic number.

It is an amenable number.

850557565 is a deficient number, since it is larger than the sum of its proper divisors (355816835).

850557565 is a wasteful number, since it uses less digits than its factorization.

850557565 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7094 (or 7068 counting only the distinct ones).

The product of its (nonzero) digits is 1050000, while the sum is 46.

The square root of 850557565 is about 29164.3200675071. The cubic root of 850557565 is about 947.4753149005.

The spelling of 850557565 in words is "eight hundred fifty million, five hundred fifty-seven thousand, five hundred sixty-five".