673403 has 2 divisors, whose sum is σ = 673404. Its totient is φ = 673402.

The previous prime is 673399. The next prime is 673411. The reversal of 673403 is 304376.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 673403 - 2² = 673399 is a prime.

It is a Chen prime.

It is a plaindrome in base 6.

It is not a weakly prime, because it can be changed into another prime (679403) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 336701 + 336702.

It is an arithmetic number, because the mean of its divisors is an integer number (336702).

2⁶⁷³⁴⁰³ is an apocalyptic number.

673403 is a deficient number, since it is larger than the sum of its proper divisors (1).

673403 is an equidigital number, since it uses as much as digits as its factorization.

673403 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1512, while the sum is 23.

The square root of 673403 is about 820.6113574647. The cubic root of 673403 is about 87.6512974225.

Subtracting from 673403 its sum of digits (23), we obtain a triangular number (673380 = T₁₁₆₀).

Adding to 673403 its reverse (304376), we get a palindrome (977779).

The spelling of 673403 in words is "six hundred seventy-three thousand, four hundred three".