856629713 has 4 divisors (see below), whose sum is σ = 857190768. Its totient is φ = 856068660.

The previous prime is 856629707. The next prime is 856629721. The reversal of 856629713 is 317926658.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 856629713 - 2¹² = 856625617 is a prime.

It is a super-5 number, since 5×856629713⁵ (a number of 46 digits) contains 55555 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (856626713) 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, 278231 + ... + 281292.

It is an arithmetic number, because the mean of its divisors is an integer number (214297692).

Almost surely, 2^856629713 is an apocalyptic number.

It is an amenable number.

856629713 is a deficient number, since it is larger than the sum of its proper divisors (561055).

856629713 is a wasteful number, since it uses less digits than its factorization.

856629713 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 561054.

The product of its digits is 544320, while the sum is 47.

The square root of 856629713 is about 29268.2372718276. The cubic root of 856629713 is about 949.7246526112.

The spelling of 856629713 in words is "eight hundred fifty-six million, six hundred twenty-nine thousand, seven hundred thirteen".