673501 has 6 divisors (see below), whose sum is σ = 688506. Its totient is φ = 658800.

The previous prime is 673499. The next prime is 673513. The reversal of 673501 is 105376.

673501 = T₃₈ + T₃₉ + ... + T₁₅₉.

It can be written as a sum of positive squares in 3 ways, for example, as 184900 + 488601 = 430^2 + 699^2 .

It is not a de Polignac number, because 673501 - 2¹ = 673499 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (673201) 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 in 5 ways as a sum of consecutive naturals, for example, 3631 + ... + 3811.

It is an arithmetic number, because the mean of its divisors is an integer number (114751).

2⁶⁷³⁵⁰¹ is an apocalyptic number.

673501 is a gapful number since it is divisible by the number (61) formed by its first and last digit.

It is an amenable number.

673501 is a deficient number, since it is larger than the sum of its proper divisors (15005).

673501 is an equidigital number, since it uses as much as digits as its factorization.

673501 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 303 (or 242 counting only the distinct ones).

The product of its (nonzero) digits is 630, while the sum is 22.

The square root of 673501 is about 820.6710668715. The cubic root of 673501 is about 87.6555491660.

Adding to 673501 its reverse (105376), we get a palindrome (778877).

The spelling of 673501 in words is "six hundred seventy-three thousand, five hundred one".