683256857 has 2 divisors, whose sum is σ = 683256858. Its totient is φ = 683256856.

The previous prime is 683256829. The next prime is 683256869. The reversal of 683256857 is 758652386.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 474194176 + 209062681 = 21776^2 + 14459^2 .

It is a cyclic number.

It is not a de Polignac number, because 683256857 - 2¹⁶ = 683191321 is a prime.

It is not a weakly prime, because it can be changed into another prime (683256257) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 341628428 + 341628429.

It is an arithmetic number, because the mean of its divisors is an integer number (341628429).

Almost surely, 2^683256857 is an apocalyptic number.

It is an amenable number.

683256857 is a deficient number, since it is larger than the sum of its proper divisors (1).

683256857 is an equidigital number, since it uses as much as digits as its factorization.

683256857 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2419200, while the sum is 50.

The square root of 683256857 is about 26139.1824087901. The cubic root of 683256857 is about 880.7676054631.

The spelling of 683256857 in words is "six hundred eighty-three million, two hundred fifty-six thousand, eight hundred fifty-seven".