673443377 has 2 divisors, whose sum is σ = 673443378. Its totient is φ = 673443376.

The previous prime is 673443371. The next prime is 673443403. The reversal of 673443377 is 773344376.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 425349376 + 248094001 = 20624^2 + 15751^2 .

It is a cyclic number.

It is not a de Polignac number, because 673443377 - 2¹⁰ = 673442353 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (673443371) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 336721688 + 336721689.

It is an arithmetic number, because the mean of its divisors is an integer number (336721689).

Almost surely, 2^673443377 is an apocalyptic number.

It is an amenable number.

673443377 is a deficient number, since it is larger than the sum of its proper divisors (1).

673443377 is an equidigital number, since it uses as much as digits as its factorization.

673443377 is an evil number, because the sum of its binary digits is even.

The product of its digits is 889056, while the sum is 44.

The square root of 673443377 is about 25950.7875988379. The cubic root of 673443377 is about 876.5304923416.

Subtracting 673443377 from its reverse (773344376), we obtain a palindrome (99900999).

The spelling of 673443377 in words is "six hundred seventy-three million, four hundred forty-three thousand, three hundred seventy-seven".