861016756 has 12 divisors (see below), whose sum is σ = 1507100868. Its totient is φ = 430416512.

The previous prime is 861016733. The next prime is 861016771. The reversal of 861016756 is 657610168.

It can be written as a sum of positive squares in 2 ways, for example, as 265168656 + 595848100 = 16284^2 + 24410^2 .

It is a super-2 number, since 2×861016756² = 1482699708225527072, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 870 + ... + 41506.

It is an arithmetic number, because the mean of its divisors is an integer number (125591739).

Almost surely, 2^861016756 is an apocalyptic number.

It is an amenable number.

861016756 is a deficient number, since it is larger than the sum of its proper divisors (646084112).

861016756 is a wasteful number, since it uses less digits than its factorization.

861016756 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45938 (or 45936 counting only the distinct ones).

The product of its (nonzero) digits is 60480, while the sum is 40.

The square root of 861016756 is about 29343.0870223295. The cubic root of 861016756 is about 951.3431623027.

The spelling of 861016756 in words is "eight hundred sixty-one million, sixteen thousand, seven hundred fifty-six".