806826865 has 16 divisors (see below), whose sum is σ = 1045790928. Its totient is φ = 594026496.

The previous prime is 806826841. The next prime is 806826883. The reversal of 806826865 is 568628608.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 353477601 + 453349264 = 18801^2 + 21292^2 .

It is a cyclic number.

It is not a de Polignac number, because 806826865 - 2⁵ = 806826833 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, 3489 + ... + 40321.

It is an arithmetic number, because the mean of its divisors is an integer number (65361933).

Almost surely, 2^806826865 is an apocalyptic number.

It is an amenable number.

806826865 is a deficient number, since it is larger than the sum of its proper divisors (238964063).

806826865 is a wasteful number, since it uses less digits than its factorization.

806826865 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37188.

The product of its (nonzero) digits is 1105920, while the sum is 49.

The square root of 806826865 is about 28404.6979388974. The cubic root of 806826865 is about 930.9509158315.

The spelling of 806826865 in words is "eight hundred six million, eight hundred twenty-six thousand, eight hundred sixty-five".