861265796 has 12 divisors (see below), whose sum is σ = 1507557660. Its totient is φ = 430535040.

The previous prime is 861265711. The next prime is 861265799. The reversal of 861265796 is 697562168.

It can be written as a sum of positive squares in 2 ways, for example, as 541213696 + 320052100 = 23264^2 + 17890^2 .

It is not an unprimeable number, because it can be changed into a prime (861265799) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2465 + ... + 41576.

It is an arithmetic number, because the mean of its divisors is an integer number (125629805).

Almost surely, 2^861265796 is an apocalyptic number.

It is an amenable number.

861265796 is a deficient number, since it is larger than the sum of its proper divisors (646291864).

861265796 is a wasteful number, since it uses less digits than its factorization.

861265796 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48934 (or 48932 counting only the distinct ones).

The product of its digits is 1088640, while the sum is 50.

The square root of 861265796 is about 29347.3303044757. The cubic root of 861265796 is about 951.4348754472.

The spelling of 861265796 in words is "eight hundred sixty-one million, two hundred sixty-five thousand, seven hundred ninety-six".