648012941 has 2 divisors, whose sum is σ = 648012942. Its totient is φ = 648012940.

The previous prime is 648012901. The next prime is 648012961. The reversal of 648012941 is 149210846.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 642419716 + 5593225 = 25346^2 + 2365^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-648012941 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (648012901) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 324006470 + 324006471.

It is an arithmetic number, because the mean of its divisors is an integer number (324006471).

Almost surely, 2^648012941 is an apocalyptic number.

It is an amenable number.

648012941 is a deficient number, since it is larger than the sum of its proper divisors (1).

648012941 is an equidigital number, since it uses as much as digits as its factorization.

648012941 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 13824, while the sum is 35.

The square root of 648012941 is about 25456.0983066926. The cubic root of 648012941 is about 865.3555026867.

The spelling of 648012941 in words is "six hundred forty-eight million, twelve thousand, nine hundred forty-one".