856508763 has 16 divisors (see below), whose sum is σ = 1246925952. Its totient is φ = 518640000.

The previous prime is 856508761. The next prime is 856508767. The reversal of 856508763 is 367805658.

856508763 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 856508763 - 2¹ = 856508761 is a prime.

It is a super-2 number, since 2×856508763² = 1467214522191580338, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (856508761) 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, 28828 + ... + 50438.

It is an arithmetic number, because the mean of its divisors is an integer number (77932872).

Almost surely, 2^856508763 is an apocalyptic number.

856508763 is a deficient number, since it is larger than the sum of its proper divisors (390417189).

856508763 is a wasteful number, since it uses less digits than its factorization.

856508763 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22826.

The product of its (nonzero) digits is 1209600, while the sum is 48.

The square root of 856508763 is about 29266.1709658097. The cubic root of 856508763 is about 949.6799523937.

The spelling of 856508763 in words is "eight hundred fifty-six million, five hundred eight thousand, seven hundred sixty-three".