673494137 has 2 divisors, whose sum is σ = 673494138. Its totient is φ = 673494136.

The previous prime is 673494109. The next prime is 673494179. The reversal of 673494137 is 731494376.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 599809081 + 73685056 = 24491^2 + 8584^2 .

It is a cyclic number.

It is not a de Polignac number, because 673494137 - 2²⁰ = 672445561 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (673494737) 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, 336747068 + 336747069.

It is an arithmetic number, because the mean of its divisors is an integer number (336747069).

Almost surely, 2^673494137 is an apocalyptic number.

It is an amenable number.

673494137 is a deficient number, since it is larger than the sum of its proper divisors (1).

673494137 is an equidigital number, since it uses as much as digits as its factorization.

673494137 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 381024, while the sum is 44.

The square root of 673494137 is about 25951.7655854086. The cubic root of 673494137 is about 876.5525142722.

The spelling of 673494137 in words is "six hundred seventy-three million, four hundred ninety-four thousand, one hundred thirty-seven".