681255683 has 2 divisors, whose sum is σ = 681255684. Its totient is φ = 681255682.

The previous prime is 681255661. The next prime is 681255689. The reversal of 681255683 is 386552186.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 681255683 - 2¹⁰ = 681254659 is a prime.

It is not a weakly prime, because it can be changed into another prime (681255689) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 340627841 + 340627842.

It is an arithmetic number, because the mean of its divisors is an integer number (340627842).

Almost surely, 2^681255683 is an apocalyptic number.

681255683 is a deficient number, since it is larger than the sum of its proper divisors (1).

681255683 is an equidigital number, since it uses as much as digits as its factorization.

681255683 is an evil number, because the sum of its binary digits is even.

The product of its digits is 345600, while the sum is 44.

The square root of 681255683 is about 26100.8751385849. The cubic root of 681255683 is about 879.9068784899.

The spelling of 681255683 in words is "six hundred eighty-one million, two hundred fifty-five thousand, six hundred eighty-three".