649241693 has 2 divisors, whose sum is σ = 649241694. Its totient is φ = 649241692.

The previous prime is 649241641. The next prime is 649241699. The reversal of 649241693 is 396142946.

It is a happy number.

649241693 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., 437771929 + 211469764 = 20923^2 + 14542^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-649241693 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (649241699) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 324620846 + 324620847.

It is an arithmetic number, because the mean of its divisors is an integer number (324620847).

Almost surely, 2^649241693 is an apocalyptic number.

It is an amenable number.

649241693 is a deficient number, since it is larger than the sum of its proper divisors (1).

649241693 is an equidigital number, since it uses as much as digits as its factorization.

649241693 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 279936, while the sum is 44.

The square root of 649241693 is about 25480.2216042169. The cubic root of 649241693 is about 865.9021151945.

The spelling of 649241693 in words is "six hundred forty-nine million, two hundred forty-one thousand, six hundred ninety-three".