673719049 has 2 divisors, whose sum is σ = 673719050. Its totient is φ = 673719048.

The previous prime is 673719047. The next prime is 673719083. The reversal of 673719049 is 940917376.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 594384400 + 79334649 = 24380^2 + 8907^2 .

It is a cyclic number.

It is not a de Polignac number, because 673719049 - 2¹ = 673719047 is a prime.

Together with 673719047, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (673719047) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 336859524 + 336859525.

It is an arithmetic number, because the mean of its divisors is an integer number (336859525).

Almost surely, 2^673719049 is an apocalyptic number.

It is an amenable number.

673719049 is a deficient number, since it is larger than the sum of its proper divisors (1).

673719049 is an equidigital number, since it uses as much as digits as its factorization.

673719049 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 285768, while the sum is 46.

The square root of 673719049 is about 25956.0984934177. The cubic root of 673719049 is about 876.6500777236.

The spelling of 673719049 in words is "six hundred seventy-three million, seven hundred nineteen thousand, forty-nine".