681467041 has 2 divisors, whose sum is σ = 681467042. Its totient is φ = 681467040.

The previous prime is 681467029. The next prime is 681467093. The reversal of 681467041 is 140764186.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 613057600 + 68409441 = 24760^2 + 8271^2 .

It is a cyclic number.

It is not a de Polignac number, because 681467041 - 2⁹ = 681466529 is a prime.

It is not a weakly prime, because it can be changed into another prime (681465041) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 340733520 + 340733521.

It is an arithmetic number, because the mean of its divisors is an integer number (340733521).

Almost surely, 2^681467041 is an apocalyptic number.

It is an amenable number.

681467041 is a deficient number, since it is larger than the sum of its proper divisors (1).

681467041 is an equidigital number, since it uses as much as digits as its factorization.

681467041 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 32256, while the sum is 37.

The square root of 681467041 is about 26104.9236926676. The cubic root of 681467041 is about 879.9978654390.

The spelling of 681467041 in words is "six hundred eighty-one million, four hundred sixty-seven thousand, forty-one".