857444068 has 24 divisors (see below), whose sum is σ = 1659630392. Its totient is φ = 385046784.

The previous prime is 857444051. The next prime is 857444069. The reversal of 857444068 is 860444758.

It can be written as a sum of positive squares in 4 ways, for example, as 367795684 + 489648384 = 19178^2 + 22128^2 .

It is not an unprimeable number, because it can be changed into a prime (857444069) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 220905 + ... + 224752.

Almost surely, 2^857444068 is an apocalyptic number.

It is an amenable number.

857444068 is a deficient number, since it is larger than the sum of its proper divisors (802186324).

857444068 is a wasteful number, since it uses less digits than its factorization.

857444068 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 445711 (or 445709 counting only the distinct ones).

The product of its (nonzero) digits is 860160, while the sum is 46.

The square root of 857444068 is about 29282.1458913106. The cubic root of 857444068 is about 950.0255091950.

The spelling of 857444068 in words is "eight hundred fifty-seven million, four hundred forty-four thousand, sixty-eight".