857850713 has 2 divisors, whose sum is σ = 857850714. Its totient is φ = 857850712.

The previous prime is 857850691. The next prime is 857850743. The reversal of 857850713 is 317058758.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 645769744 + 212080969 = 25412^2 + 14563^2 .

It is a cyclic number.

It is not a de Polignac number, because 857850713 - 2⁶ = 857850649 is a prime.

It is equal to p_43963568 and since 857850713 and 43963568 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (857850743) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 428925356 + 428925357.

It is an arithmetic number, because the mean of its divisors is an integer number (428925357).

Almost surely, 2^857850713 is an apocalyptic number.

It is an amenable number.

857850713 is a deficient number, since it is larger than the sum of its proper divisors (1).

857850713 is an equidigital number, since it uses as much as digits as its factorization.

857850713 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 235200, while the sum is 44.

The square root of 857850713 is about 29289.0886338240. The cubic root of 857850713 is about 950.1756694531.

The spelling of 857850713 in words is "eight hundred fifty-seven million, eight hundred fifty thousand, seven hundred thirteen".