857284684 has 12 divisors (see below), whose sum is σ = 1509805024. Its totient is φ = 425911824.

The previous prime is 857284661. The next prime is 857284697. The reversal of 857284684 is 486482758.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 681924 + ... + 683179.

Almost surely, 2^857284684 is an apocalyptic number.

It is an amenable number.

857284684 is a deficient number, since it is larger than the sum of its proper divisors (652520340).

857284684 is a wasteful number, since it uses less digits than its factorization.

857284684 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1365264 (or 1365262 counting only the distinct ones).

The product of its digits is 3440640, while the sum is 52.

The square root of 857284684 is about 29279.4242429731. The cubic root of 857284684 is about 949.9666411186.

The spelling of 857284684 in words is "eight hundred fifty-seven million, two hundred eighty-four thousand, six hundred eighty-four".