857623 has 8 divisors (see below), whose sum is σ = 949088. Its totient is φ = 769824.

The previous prime is 857581. The next prime is 857629. The reversal of 857623 is 326758.

857623 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-857623 is a prime.

It is an Ulam number.

It is a d-powerful number, because it can be written as 8 + 5 + 6⁴ + 7⁷ + 2¹⁵ + 3 .

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (857629) 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, 411 + ... + 1372.

It is an arithmetic number, because the mean of its divisors is an integer number (118636).

2⁸⁵⁷⁶²³ is an apocalyptic number.

857623 is a deficient number, since it is larger than the sum of its proper divisors (91465).

857623 is a wasteful number, since it uses less digits than its factorization.

857623 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1833.

The product of its digits is 10080, while the sum is 31.

The square root of 857623 is about 926.0793702486. The cubic root of 857623 is about 95.0091588584.

The spelling of 857623 in words is "eight hundred fifty-seven thousand, six hundred twenty-three".