856314787 has 2 divisors, whose sum is σ = 856314788. Its totient is φ = 856314786.

The previous prime is 856314763. The next prime is 856314827. The reversal of 856314787 is 787413658.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 856314787 - 2⁷ = 856314659 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 856314787.

It is not a weakly prime, because it can be changed into another prime (856314707) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 428157393 + 428157394.

It is an arithmetic number, because the mean of its divisors is an integer number (428157394).

Almost surely, 2^856314787 is an apocalyptic number.

856314787 is a deficient number, since it is larger than the sum of its proper divisors (1).

856314787 is an equidigital number, since it uses as much as digits as its factorization.

856314787 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1128960, while the sum is 49.

The square root of 856314787 is about 29262.8567812509. The cubic root of 856314787 is about 949.6082547319.

The spelling of 856314787 in words is "eight hundred fifty-six million, three hundred fourteen thousand, seven hundred eighty-seven".