16856713 has 4 divisors (see below), whose sum is σ = 17142480. Its totient is φ = 16570948.

The previous prime is 16856701. The next prime is 16856717. The reversal of 16856713 is 31765861.

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, and also an emirpimes, since its reverse is a distinct semiprime: 31765861 = 907 ⋅35023.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-16856713 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16856717) 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, 142795 + ... + 142912.

It is an arithmetic number, because the mean of its divisors is an integer number (4285620).

Almost surely, 2^16856713 is an apocalyptic number.

It is an amenable number.

16856713 is a deficient number, since it is larger than the sum of its proper divisors (285767).

16856713 is an equidigital number, since it uses as much as digits as its factorization.

16856713 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 285766.

The product of its digits is 30240, while the sum is 37.

The square root of 16856713 is about 4105.6927551876. The cubic root of 16856713 is about 256.4037056828.

It can be divided in two parts, 168567 and 13, that multiplied together give a triangular number (2191371 = T₂₀₉₃).

The spelling of 16856713 in words is "sixteen million, eight hundred fifty-six thousand, seven hundred thirteen".