856294668 has 36 divisors (see below), whose sum is σ = 2165411248. Its totient is φ = 285314400.

The previous prime is 856294643. The next prime is 856294711. The reversal of 856294668 is 866492658.

It is a happy number.

856294668 is a `hidden beast` number, since 8 + 5 + 629 + 4 + 6 + 6 + 8 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 165318 + ... + 170418.

Almost surely, 2^856294668 is an apocalyptic number.

It is an amenable number.

856294668 is an abundant number, since it is smaller than the sum of its proper divisors (1309116580).

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

856294668 is a wasteful number, since it uses less digits than its factorization.

856294668 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9774 (or 9769 counting only the distinct ones).

The product of its digits is 4976640, while the sum is 54.

The square root of 856294668 is about 29262.5130158023. The cubic root of 856294668 is about 949.6008177012.

The spelling of 856294668 in words is "eight hundred fifty-six million, two hundred ninety-four thousand, six hundred sixty-eight".