856463796 has 18 divisors (see below), whose sum is σ = 2164950242. Its totient is φ = 285487920.

The previous prime is 856463789. The next prime is 856463819. The reversal of 856463796 is 697364658.

856463796 is a `hidden beast` number, since 8 + 564 + 6 + 3 + 79 + 6 = 666.

It can be written as a sum of positive squares in only one way, i.e., 506250000 + 350213796 = 22500^2 + 18714^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 11895295 + ... + 11895366.

Almost surely, 2^856463796 is an apocalyptic number.

It is an amenable number.

856463796 is an abundant number, since it is smaller than the sum of its proper divisors (1308486446).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

856463796 is a wasteful number, since it uses less digits than its factorization.

856463796 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23790671 (or 23790666 counting only the distinct ones).

The product of its digits is 6531840, while the sum is 54.

The square root of 856463796 is about 29265.4027137848. The cubic root of 856463796 is about 949.6633325965.

The spelling of 856463796 in words is "eight hundred fifty-six million, four hundred sixty-three thousand, seven hundred ninety-six".