856806107 has 4 divisors (see below), whose sum is σ = 857174760. Its totient is φ = 856437456.

The previous prime is 856806101. The next prime is 856806127. The reversal of 856806107 is 701608658.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 856806107 - 2⁶ = 856806043 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (856806101) 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, 180818 + ... + 185495.

It is an arithmetic number, because the mean of its divisors is an integer number (214293690).

Almost surely, 2^856806107 is an apocalyptic number.

856806107 is a deficient number, since it is larger than the sum of its proper divisors (368653).

856806107 is a wasteful number, since it uses less digits than its factorization.

856806107 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 368652.

The product of its (nonzero) digits is 80640, while the sum is 41.

The square root of 856806107 is about 29271.2505199214. The cubic root of 856806107 is about 949.7898360583.

The spelling of 856806107 in words is "eight hundred fifty-six million, eight hundred six thousand, one hundred seven".