673943423 has 2 divisors, whose sum is σ = 673943424. Its totient is φ = 673943422.

The previous prime is 673943353. The next prime is 673943477. The reversal of 673943423 is 324349376.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 673943423 - 2²⁰ = 672894847 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (673946423) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 336971711 + 336971712.

It is an arithmetic number, because the mean of its divisors is an integer number (336971712).

Almost surely, 2^673943423 is an apocalyptic number.

673943423 is a deficient number, since it is larger than the sum of its proper divisors (1).

673943423 is an equidigital number, since it uses as much as digits as its factorization.

673943423 is an evil number, because the sum of its binary digits is even.

The product of its digits is 326592, while the sum is 41.

The square root of 673943423 is about 25960.4203163200. The cubic root of 673943423 is about 876.7473861655.

The spelling of 673943423 in words is "six hundred seventy-three million, nine hundred forty-three thousand, four hundred twenty-three".