673217 has 6 divisors (see below), whose sum is σ = 716418. Its totient is φ = 630432.

The previous prime is 673207. The next prime is 673223. The reversal of 673217 is 712376.

It can be written as a sum of positive squares in only one way, i.e., 633616 + 39601 = 796^2 + 199^2 .

It is not a de Polignac number, because 673217 - 2⁴ = 673201 is a prime.

It is a super-2 number, since 2×673217² = 906442258178, which contains 22 as substring.

It is a Duffinian number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 673217.

It is not an unprimeable number, because it can be changed into a prime (673207) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3284 + ... + 3482.

It is an arithmetic number, because the mean of its divisors is an integer number (119403).

2⁶⁷³²¹⁷ is an apocalyptic number.

It is an amenable number.

673217 is a deficient number, since it is larger than the sum of its proper divisors (43201).

673217 is an equidigital number, since it uses as much as digits as its factorization.

673217 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 415 (or 216 counting only the distinct ones).

The product of its digits is 1764, while the sum is 26.

The square root of 673217 is about 820.4980194979. The cubic root of 673217 is about 87.6432266523.

The spelling of 673217 in words is "six hundred seventy-three thousand, two hundred seventeen".