856586466 has 24 divisors (see below), whose sum is σ = 1856634780. Its totient is φ = 285421536.

The previous prime is 856586459. The next prime is 856586509. The reversal of 856586466 is 664685658.

It is a happy number.

856586466 is a `hidden beast` number, since 8 + 56 + 586 + 4 + 6 + 6 = 666.

856586466 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 828230841 + 28355625 = 28779^2 + 5325^2 .

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, 51240 + ... + 65868.

Almost surely, 2^856586466 is an apocalyptic number.

856586466 is an abundant number, since it is smaller than the sum of its proper divisors (1000048314).

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

856586466 is a wasteful number, since it uses less digits than its factorization.

856586466 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17890 (or 17887 counting only the distinct ones).

The product of its digits is 8294400, while the sum is 54.

The square root of 856586466 is about 29267.4984581874. The cubic root of 856586466 is about 949.7086700411.

The spelling of 856586466 in words is "eight hundred fifty-six million, five hundred eighty-six thousand, four hundred sixty-six".