861611793 has 16 divisors (see below), whose sum is σ = 1313859456. Its totient is φ = 492001920.

The previous prime is 861611749. The next prime is 861611801. The reversal of 861611793 is 397116168.

861611793 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 861611793 - 2¹⁰ = 861610769 is a prime.

It is not an unprimeable number, because it can be changed into a prime (861611743) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17613 + ... + 45093.

It is an arithmetic number, because the mean of its divisors is an integer number (82116216).

Almost surely, 2^861611793 is an apocalyptic number.

It is an amenable number.

861611793 is a deficient number, since it is larger than the sum of its proper divisors (452247663).

861611793 is a wasteful number, since it uses less digits than its factorization.

861611793 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28984.

The product of its digits is 54432, while the sum is 42.

The square root of 861611793 is about 29353.2245758452. The cubic root of 861611793 is about 951.5622652888.

The spelling of 861611793 in words is "eight hundred sixty-one million, six hundred eleven thousand, seven hundred ninety-three".