681070759 has 2 divisors, whose sum is σ = 681070760. Its totient is φ = 681070758.

The previous prime is 681070739. The next prime is 681070763. The reversal of 681070759 is 957070186.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 681070759 - 2⁵ = 681070727 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (681070739) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 340535379 + 340535380.

It is an arithmetic number, because the mean of its divisors is an integer number (340535380).

Almost surely, 2^681070759 is an apocalyptic number.

681070759 is a deficient number, since it is larger than the sum of its proper divisors (1).

681070759 is an equidigital number, since it uses as much as digits as its factorization.

681070759 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 105840, while the sum is 43.

The square root of 681070759 is about 26097.3324115703. The cubic root of 681070759 is about 879.8272556069.

The spelling of 681070759 in words is "six hundred eighty-one million, seventy thousand, seven hundred fifty-nine".