673722317 has 2 divisors, whose sum is σ = 673722318. Its totient is φ = 673722316.

The previous prime is 673722289. The next prime is 673722331. The reversal of 673722317 is 713227376.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 658127716 + 15594601 = 25654^2 + 3949^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-673722317 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (673722617) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 336861158 + 336861159.

It is an arithmetic number, because the mean of its divisors is an integer number (336861159).

Almost surely, 2^673722317 is an apocalyptic number.

It is an amenable number.

673722317 is a deficient number, since it is larger than the sum of its proper divisors (1).

673722317 is an equidigital number, since it uses as much as digits as its factorization.

673722317 is an evil number, because the sum of its binary digits is even.

The product of its digits is 74088, while the sum is 38.

The square root of 673722317 is about 25956.1614457916. The cubic root of 673722317 is about 876.6514951729.

The spelling of 673722317 in words is "six hundred seventy-three million, seven hundred twenty-two thousand, three hundred seventeen".