673809743 has 2 divisors, whose sum is σ = 673809744. Its totient is φ = 673809742.

The previous prime is 673809733. The next prime is 673809757. The reversal of 673809743 is 347908376.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 673809743 - 2²⁴ = 657032527 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (673809733) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 336904871 + 336904872.

It is an arithmetic number, because the mean of its divisors is an integer number (336904872).

Almost surely, 2^673809743 is an apocalyptic number.

673809743 is a deficient number, since it is larger than the sum of its proper divisors (1).

673809743 is an equidigital number, since it uses as much as digits as its factorization.

673809743 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 762048, while the sum is 47.

The square root of 673809743 is about 25957.8454999640. The cubic root of 673809743 is about 876.6894132770.

The spelling of 673809743 in words is "six hundred seventy-three million, eight hundred nine thousand, seven hundred forty-three".