857685954 has 16 divisors (see below), whose sum is σ = 1805654880. Its totient is φ = 270848160.

The previous prime is 857685949. The next prime is 857685977. The reversal of 857685954 is 459586758.

It is a Harshad number since it is a multiple of its sum of digits (57).

It is a junction number, because it is equal to n+sod(n) for n = 857685894 and 857685903.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3761667 + ... + 3761894.

It is an arithmetic number, because the mean of its divisors is an integer number (112853430).

Almost surely, 2^857685954 is an apocalyptic number.

857685954 is an abundant number, since it is smaller than the sum of its proper divisors (947968926).

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

857685954 is a wasteful number, since it uses less digits than its factorization.

857685954 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7523585.

The product of its digits is 12096000, while the sum is 57.

The square root of 857685954 is about 29286.2758643020. The cubic root of 857685954 is about 950.1148352411.

The spelling of 857685954 in words is "eight hundred fifty-seven million, six hundred eighty-five thousand, nine hundred fifty-four".