861265946 has 8 divisors (see below), whose sum is σ = 1326815220. Its totient is φ = 418994208.

The previous prime is 861265943. The next prime is 861265961. The reversal of 861265946 is 649562168.

It can be written as a sum of positive squares in 2 ways, for example, as 844774225 + 16491721 = 29065^2 + 4061^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 861265946.

It is not an unprimeable number, because it can be changed into a prime (861265943) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5819291 + ... + 5819438.

Almost surely, 2^861265946 is an apocalyptic number.

861265946 is a deficient number, since it is larger than the sum of its proper divisors (465549274).

861265946 is a wasteful number, since it uses less digits than its factorization.

861265946 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11638768.

The product of its digits is 622080, while the sum is 47.

The square root of 861265946 is about 29347.3328600744. The cubic root of 861265946 is about 951.4349306819.

The spelling of 861265946 in words is "eight hundred sixty-one million, two hundred sixty-five thousand, nine hundred forty-six".