866456876 has 12 divisors (see below), whose sum is σ = 1519591920. Its totient is φ = 432287760.

The previous prime is 866456863. The next prime is 866456939. The reversal of 866456876 is 678654668.

It is a happy number.

It is a hoax number, since the sum of its digits (56) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 233096 + ... + 236783.

It is an arithmetic number, because the mean of its divisors is an integer number (126632660).

Almost surely, 2^866456876 is an apocalyptic number.

It is an amenable number.

866456876 is a deficient number, since it is larger than the sum of its proper divisors (653135044).

866456876 is a wasteful number, since it uses less digits than its factorization.

866456876 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 470344 (or 470342 counting only the distinct ones).

The product of its digits is 11612160, while the sum is 56.

The square root of 866456876 is about 29435.6395547982. The cubic root of 866456876 is about 953.3425655889.

The spelling of 866456876 in words is "eight hundred sixty-six million, four hundred fifty-six thousand, eight hundred seventy-six".