865394830756 has 9 divisors (see below), whose sum is σ = 1514444209761. Its totient is φ = 432696485112.

The previous prime is 865394830739. The next prime is 865394830763. The reversal of 865394830756 is 657038493568.

The square root of 865394830756 is 930266.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 865327852900 + 66977856 = 930230^2 + 8184^2 .

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 1627966 + ... + 2093098.

Almost surely, 2^865394830756 is an apocalyptic number.

865394830756 is the 930266-th square number.

It is an amenable number.

865394830756 is a deficient number, since it is larger than the sum of its proper divisors (649049379005).

865394830756 is an frugal number, since it uses more digits than its factorization.

865394830756 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 930270 (or 465135 counting only the distinct ones).

The product of its (nonzero) digits is 130636800, while the sum is 64.

Multiplying 865394830756 by its sum of digits (64), we get a square (55385269168384 = 7442128²).

The spelling of 865394830756 in words is "eight hundred sixty-five billion, three hundred ninety-four million, eight hundred thirty thousand, seven hundred fifty-six".