851366065 has 16 divisors (see below), whose sum is σ = 1120754880. Its totient is φ = 615709120.

The previous prime is 851366059. The next prime is 851366123. The reversal of 851366065 is 560663158.

It is not a de Polignac number, because 851366065 - 2³ = 851366057 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 33394 + ... + 53083.

It is an arithmetic number, because the mean of its divisors is an integer number (70047180).

Almost surely, 2^851366065 is an apocalyptic number.

It is an amenable number.

851366065 is a deficient number, since it is larger than the sum of its proper divisors (269388815).

851366065 is a wasteful number, since it uses less digits than its factorization.

851366065 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 86672.

The product of its (nonzero) digits is 129600, while the sum is 40.

The square root of 851366065 is about 29178.1778903344. The cubic root of 851366065 is about 947.7754283136.

The spelling of 851366065 in words is "eight hundred fifty-one million, three hundred sixty-six thousand, sixty-five".