865795837 has 2 divisors, whose sum is σ = 865795838. Its totient is φ = 865795836.

The previous prime is 865795823. The next prime is 865795859. The reversal of 865795837 is 738597568.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 835556836 + 30239001 = 28906^2 + 5499^2 .

It is a cyclic number.

It is not a de Polignac number, because 865795837 - 2¹⁵ = 865763069 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (865790837) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 432897918 + 432897919.

It is an arithmetic number, because the mean of its divisors is an integer number (432897919).

Almost surely, 2^865795837 is an apocalyptic number.

It is an amenable number.

865795837 is a deficient number, since it is larger than the sum of its proper divisors (1).

865795837 is an equidigital number, since it uses as much as digits as its factorization.

865795837 is an evil number, because the sum of its binary digits is even.

The product of its digits is 12700800, while the sum is 58.

The square root of 865795837 is about 29424.4088640707. The cubic root of 865795837 is about 953.1000619070.

It can be divided in two parts, 86579 and 5837, that added together give a square (92416 = 304²).

The spelling of 865795837 in words is "eight hundred sixty-five million, seven hundred ninety-five thousand, eight hundred thirty-seven".