856806108 has 12 divisors (see below), whose sum is σ = 1999214280. Its totient is φ = 285602032.

The previous prime is 856806101. The next prime is 856806127. The reversal of 856806108 is 801608658.

856806108 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-2 number, since 2×856806108² = 1468233413412215328, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 856806108.

It is a congruent 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, 35700243 + ... + 35700266.

It is an arithmetic number, because the mean of its divisors is an integer number (166601190).

Almost surely, 2^856806108 is an apocalyptic number.

It is an amenable number.

856806108 is an abundant number, since it is smaller than the sum of its proper divisors (1142408172).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

856806108 is a wasteful number, since it uses less digits than its factorization.

856806108 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71400516 (or 71400514 counting only the distinct ones).

The product of its (nonzero) digits is 92160, while the sum is 42.

The square root of 856806108 is about 29271.2505370030. The cubic root of 856806108 is about 949.7898364279.

The spelling of 856806108 in words is "eight hundred fifty-six million, eight hundred six thousand, one hundred eight".