856260907 has 2 divisors, whose sum is σ = 856260908. Its totient is φ = 856260906.

The previous prime is 856260857. The next prime is 856260917. The reversal of 856260907 is 709062658.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 856260907 - 2¹¹ = 856258859 is a prime.

It is not a weakly prime, because it can be changed into another prime (856260917) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 428130453 + 428130454.

It is an arithmetic number, because the mean of its divisors is an integer number (428130454).

Almost surely, 2^856260907 is an apocalyptic number.

856260907 is a deficient number, since it is larger than the sum of its proper divisors (1).

856260907 is an equidigital number, since it uses as much as digits as its factorization.

856260907 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 181440, while the sum is 43.

The square root of 856260907 is about 29261.9361457850. The cubic root of 856260907 is about 949.5883376147.

The spelling of 856260907 in words is "eight hundred fifty-six million, two hundred sixty thousand, nine hundred seven".