856137 has 8 divisors (see below), whose sum is σ = 1208736. Its totient is φ = 537152.

The previous prime is 856133. The next prime is 856139. The reversal of 856137 is 731658.

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

It is a cyclic number.

It is not a de Polignac number, because 856137 - 2² = 856133 is a prime.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 856137.

It is not an unprimeable number, because it can be changed into a prime (856133) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8343 + ... + 8444.

It is an arithmetic number, because the mean of its divisors is an integer number (151092).

2⁸⁵⁶¹³⁷ is an apocalyptic number.

It is an amenable number.

856137 is a deficient number, since it is larger than the sum of its proper divisors (352599).

856137 is a wasteful number, since it uses less digits than its factorization.

856137 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16807.

The product of its digits is 5040, while the sum is 30.

The square root of 856137 is about 925.2767153668. The cubic root of 856137 is about 94.9542531359.

The spelling of 856137 in words is "eight hundred fifty-six thousand, one hundred thirty-seven".