856377963 has 24 divisors (see below), whose sum is σ = 1436885216. Its totient is φ = 481334400.

The previous prime is 856377953. The next prime is 856377967. The reversal of 856377963 is 369773658.

856377963 is a `hidden beast` number, since 8 + 563 + 7 + 79 + 6 + 3 = 666.

856377963 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 856377963 - 2¹³ = 856369771 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (856377967) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 107578 + ... + 115263.

Almost surely, 2^856377963 is an apocalyptic number.

856377963 is a deficient number, since it is larger than the sum of its proper divisors (580507253).

856377963 is a wasteful number, since it uses less digits than its factorization.

856377963 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 222915 (or 222912 counting only the distinct ones).

The product of its digits is 5715360, while the sum is 54.

The square root of 856377963 is about 29263.9362184925. The cubic root of 856377963 is about 949.6316071162.

The spelling of 856377963 in words is "eight hundred fifty-six million, three hundred seventy-seven thousand, nine hundred sixty-three".