673817 has 2 divisors, whose sum is σ = 673818. Its totient is φ = 673816.

The previous prime is 673811. The next prime is 673837. The reversal of 673817 is 718376.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 414736 + 259081 = 644^2 + 509^2 .

It is a cyclic number.

It is not a de Polignac number, because 673817 - 2⁴ = 673801 is a prime.

It is a plaindrome in base 14.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 673817.

It is not a weakly prime, because it can be changed into another prime (673811) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 336908 + 336909.

It is an arithmetic number, because the mean of its divisors is an integer number (336909).

2⁶⁷³⁸¹⁷ is an apocalyptic number.

It is an amenable number.

673817 is a deficient number, since it is larger than the sum of its proper divisors (1).

673817 is an equidigital number, since it uses as much as digits as its factorization.

673817 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 7056, while the sum is 32.

The square root of 673817 is about 820.8635696631. The cubic root of 673817 is about 87.6692560611.

The spelling of 673817 in words is "six hundred seventy-three thousand, eight hundred seventeen".