857975 has 6 divisors (see below), whose sum is σ = 1063920. Its totient is φ = 686360.

The previous prime is 857963. The next prime is 857977. The reversal of 857975 is 579758.

It is a happy number.

It is not a de Polignac number, because 857975 - 2⁴ = 857959 is a prime.

It is a super-2 number, since 2×857975² = 1472242201250, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (857977) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 17135 + ... + 17184.

It is an arithmetic number, because the mean of its divisors is an integer number (177320).

2⁸⁵⁷⁹⁷⁵ is an apocalyptic number.

857975 is a deficient number, since it is larger than the sum of its proper divisors (205945).

857975 is a wasteful number, since it uses less digits than its factorization.

857975 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34329 (or 34324 counting only the distinct ones).

The product of its digits is 88200, while the sum is 41.

The square root of 857975 is about 926.2693992570. The cubic root of 857975 is about 95.0221554974.

The spelling of 857975 in words is "eight hundred fifty-seven thousand, nine hundred seventy-five".