673893749 has 2 divisors, whose sum is σ = 673893750. Its totient is φ = 673893748.

The previous prime is 673893743. The next prime is 673893751. The reversal of 673893749 is 947398376.

673893749 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 566916100 + 106977649 = 23810^2 + 10343^2 .

It is a cyclic number.

It is not a de Polignac number, because 673893749 - 2²⁸ = 405458293 is a prime.

Together with 673893751, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 673893694 and 673893703.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (673893743) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 336946874 + 336946875.

It is an arithmetic number, because the mean of its divisors is an integer number (336946875).

Almost surely, 2^673893749 is an apocalyptic number.

It is an amenable number.

673893749 is a deficient number, since it is larger than the sum of its proper divisors (1).

673893749 is an equidigital number, since it uses as much as digits as its factorization.

673893749 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6858432, while the sum is 56.

The square root of 673893749 is about 25959.4635730402. The cubic root of 673893749 is about 876.7258449805.

The spelling of 673893749 in words is "six hundred seventy-three million, eight hundred ninety-three thousand, seven hundred forty-nine".