673692889 has 2 divisors, whose sum is σ = 673692890. Its totient is φ = 673692888.

The previous prime is 673692763. The next prime is 673692893. The reversal of 673692889 is 988296376.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 528080400 + 145612489 = 22980^2 + 12067^2 .

It is a cyclic number.

It is not a de Polignac number, because 673692889 - 2⁹ = 673692377 is a prime.

It is not a weakly prime, because it can be changed into another prime (673692289) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 336846444 + 336846445.

It is an arithmetic number, because the mean of its divisors is an integer number (336846445).

Almost surely, 2^673692889 is an apocalyptic number.

It is an amenable number.

673692889 is a deficient number, since it is larger than the sum of its proper divisors (1).

673692889 is an equidigital number, since it uses as much as digits as its factorization.

673692889 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7838208, while the sum is 58.

The square root of 673692889 is about 25955.5945607108. The cubic root of 673692889 is about 876.6387310241.

The spelling of 673692889 in words is "six hundred seventy-three million, six hundred ninety-two thousand, eight hundred eighty-nine".