856633366 has 32 divisors (see below), whose sum is σ = 1386966240. Its totient is φ = 395366400.

The previous prime is 856633357. The next prime is 856633381. The reversal of 856633366 is 663336658.

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 15 ways as a sum of consecutive naturals, for example, 395326 + ... + 397486.

It is an arithmetic number, because the mean of its divisors is an integer number (43342695).

Almost surely, 2^856633366 is an apocalyptic number.

856633366 is a deficient number, since it is larger than the sum of its proper divisors (530332874).

856633366 is a wasteful number, since it uses less digits than its factorization.

856633366 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2400.

The product of its digits is 1399680, while the sum is 46.

The square root of 856633366 is about 29268.2996772959. The cubic root of 856633366 is about 949.7260026068.

The spelling of 856633366 in words is "eight hundred fifty-six million, six hundred thirty-three thousand, three hundred sixty-six".