856596856 has 8 divisors (see below), whose sum is σ = 1606119120. Its totient is φ = 428298424.

The previous prime is 856596841. The next prime is 856596863. The reversal of 856596856 is 658695658.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (8).

It is a self number, because there is not a number n which added to its sum of digits gives 856596856.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 53537296 + ... + 53537311.

It is an arithmetic number, because the mean of its divisors is an integer number (200764890).

Almost surely, 2^856596856 is an apocalyptic number.

It is an amenable number.

856596856 is a deficient number, since it is larger than the sum of its proper divisors (749522264).

856596856 is a wasteful number, since it uses less digits than its factorization.

856596856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 107074613 (or 107074609 counting only the distinct ones).

The product of its digits is 15552000, while the sum is 58.

The square root of 856596856 is about 29267.6759582991. The cubic root of 856596856 is about 949.7125098687.

The spelling of 856596856 in words is "eight hundred fifty-six million, five hundred ninety-six thousand, eight hundred fifty-six".