681413041 has 2 divisors, whose sum is σ = 681413042. Its totient is φ = 681413040.

The previous prime is 681413027. The next prime is 681413059. The reversal of 681413041 is 140314186.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 611523441 + 69889600 = 24729^2 + 8360^2 .

It is a cyclic number.

It is not a de Polignac number, because 681413041 - 2⁵ = 681413009 is a prime.

It is not a weakly prime, because it can be changed into another prime (681413011) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 340706520 + 340706521.

It is an arithmetic number, because the mean of its divisors is an integer number (340706521).

Almost surely, 2^681413041 is an apocalyptic number.

It is an amenable number.

681413041 is a deficient number, since it is larger than the sum of its proper divisors (1).

681413041 is an equidigital number, since it uses as much as digits as its factorization.

681413041 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2304, while the sum is 28.

The square root of 681413041 is about 26103.8893845343. The cubic root of 681413041 is about 879.9746209106.

The spelling of 681413041 in words is "six hundred eighty-one million, four hundred thirteen thousand, forty-one".