845081065 has 24 divisors (see below), whose sum is σ = 1068556608. Its totient is φ = 640390080.

The previous prime is 845081063. The next prime is 845081071. The reversal of 845081065 is 560180548.

It is not a de Polignac number, because 845081065 - 2¹ = 845081063 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (845081063) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2552950 + ... + 2553280.

It is an arithmetic number, because the mean of its divisors is an integer number (44523192).

Almost surely, 2^845081065 is an apocalyptic number.

It is an amenable number.

845081065 is a deficient number, since it is larger than the sum of its proper divisors (223475543).

845081065 is a wasteful number, since it uses less digits than its factorization.

845081065 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 657 (or 508 counting only the distinct ones).

The product of its (nonzero) digits is 38400, while the sum is 37.

The square root of 845081065 is about 29070.2780344461. The cubic root of 845081065 is about 945.4374261500.

The spelling of 845081065 in words is "eight hundred forty-five million, eighty-one thousand, sixty-five".