856377107 has 2 divisors, whose sum is σ = 856377108. Its totient is φ = 856377106.

The previous prime is 856377097. The next prime is 856377113. The reversal of 856377107 is 701773658.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 856377107 - 2⁶ = 856377043 is a prime.

It is not a weakly prime, because it can be changed into another prime (856377157) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 428188553 + 428188554.

It is an arithmetic number, because the mean of its divisors is an integer number (428188554).

Almost surely, 2^856377107 is an apocalyptic number.

856377107 is a deficient number, since it is larger than the sum of its proper divisors (1).

856377107 is an equidigital number, since it uses as much as digits as its factorization.

856377107 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 246960, while the sum is 44.

The square root of 856377107 is about 29263.9215929786. The cubic root of 856377107 is about 949.6312907119.

The spelling of 856377107 in words is "eight hundred fifty-six million, three hundred seventy-seven thousand, one hundred seven".