664673041 has 2 divisors, whose sum is σ = 664673042. Its totient is φ = 664673040.

The previous prime is 664672993. The next prime is 664673071. The reversal of 664673041 is 140376466.

664673041 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 656384400 + 8288641 = 25620^2 + 2879^2 .

It is a cyclic number.

It is not a de Polignac number, because 664673041 - 2⁷ = 664672913 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (664673071) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 332336520 + 332336521.

It is an arithmetic number, because the mean of its divisors is an integer number (332336521).

Almost surely, 2^664673041 is an apocalyptic number.

It is an amenable number.

664673041 is a deficient number, since it is larger than the sum of its proper divisors (1).

664673041 is an equidigital number, since it uses as much as digits as its factorization.

664673041 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 72576, while the sum is 37.

The square root of 664673041 is about 25781.2536739391. The cubic root of 664673041 is about 872.7087990523.

The spelling of 664673041 in words is "six hundred sixty-four million, six hundred seventy-three thousand, forty-one".