673513 has 2 divisors, whose sum is σ = 673514. Its totient is φ = 673512.

The previous prime is 673499. The next prime is 673529. The reversal of 673513 is 315376.

It is a happy number.

673513 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 660969 + 12544 = 813^2 + 112^2 .

It is a cyclic number.

It is not a de Polignac number, because 673513 - 2¹⁷ = 542441 is a prime.

It is a super-2 number, since 2×673513² = 907239522338, which contains 22 as substring.

673513 is a lucky number.

It is not a weakly prime, because it can be changed into another prime (673553) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 336756 + 336757.

It is an arithmetic number, because the mean of its divisors is an integer number (336757).

2⁶⁷³⁵¹³ is an apocalyptic number.

It is an amenable number.

673513 is a deficient number, since it is larger than the sum of its proper divisors (1).

673513 is an equidigital number, since it uses as much as digits as its factorization.

673513 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1890, while the sum is 25.

The square root of 673513 is about 820.6783779289. The cubic root of 673513 is about 87.6560697593.

Adding to 673513 its reverse (315376), we get a palindrome (988889).

The spelling of 673513 in words is "six hundred seventy-three thousand, five hundred thirteen".