673940413 has 2 divisors, whose sum is σ = 673940414. Its totient is φ = 673940412.

The previous prime is 673940369. The next prime is 673940417. The reversal of 673940413 is 314049376.

673940413 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., 416241604 + 257698809 = 20402^2 + 16053^2 .

It is a cyclic number.

It is not a de Polignac number, because 673940413 - 2¹³ = 673932221 is a prime.

It is a super-2 number, since 2×673940413² = 908391360549221138, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (673940417) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 336970206 + 336970207.

It is an arithmetic number, because the mean of its divisors is an integer number (336970207).

Almost surely, 2^673940413 is an apocalyptic number.

It is an amenable number.

673940413 is a deficient number, since it is larger than the sum of its proper divisors (1).

673940413 is an equidigital number, since it uses as much as digits as its factorization.

673940413 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 54432, while the sum is 37.

The square root of 673940413 is about 25960.3623433880. The cubic root of 673940413 is about 876.7460809058.

Adding to 673940413 its reverse (314049376), we get a palindrome (987989789).

The spelling of 673940413 in words is "six hundred seventy-three million, nine hundred forty thousand, four hundred thirteen".