856708607633 has 2 divisors, whose sum is σ = 856708607634. Its totient is φ = 856708607632.

The previous prime is 856708607611. The next prime is 856708607687. The reversal of 856708607633 is 336706807658.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 855721202704 + 987404929 = 925052^2 + 31423^2 .

It is a cyclic number.

It is not a de Polignac number, because 856708607633 - 2¹⁰ = 856708606609 is a prime.

It is not a weakly prime, because it can be changed into another prime (856708607233) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 428354303816 + 428354303817.

It is an arithmetic number, because the mean of its divisors is an integer number (428354303817).

Almost surely, 2^856708607633 is an apocalyptic number.

It is an amenable number.

856708607633 is a deficient number, since it is larger than the sum of its proper divisors (1).

856708607633 is an equidigital number, since it uses as much as digits as its factorization.

856708607633 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 30481920, while the sum is 59.

The spelling of 856708607633 in words is "eight hundred fifty-six billion, seven hundred eight million, six hundred seven thousand, six hundred thirty-three".