857797 has 4 divisors (see below), whose sum is σ = 876096. Its totient is φ = 839500.

The previous prime is 857749. The next prime is 857809. The reversal of 857797 is 797758.

857797 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 857797 - 2⁷ = 857669 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (857707) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9079 + ... + 9172.

It is an arithmetic number, because the mean of its divisors is an integer number (219024).

2⁸⁵⁷⁷⁹⁷ is an apocalyptic number.

It is an amenable number.

857797 is a deficient number, since it is larger than the sum of its proper divisors (18299).

857797 is a wasteful number, since it uses less digits than its factorization.

857797 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18298.

The product of its digits is 123480, while the sum is 43.

The square root of 857797 is about 926.1733099156. The cubic root of 857797 is about 95.0155837778.

The spelling of 857797 in words is "eight hundred fifty-seven thousand, seven hundred ninety-seven".