673522 has 4 divisors (see below), whose sum is σ = 1010286. Its totient is φ = 336760.

The previous prime is 673513. The next prime is 673529. The reversal of 673522 is 225376.

673522 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 358801 + 314721 = 599^2 + 561^2 .

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (673529) by changing a digit.

673522 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 168379 + ... + 168382.

2⁶⁷³⁵²² is an apocalyptic number.

673522 is a deficient number, since it is larger than the sum of its proper divisors (336764).

673522 is a wasteful number, since it uses less digits than its factorization.

673522 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 336763.

The product of its digits is 2520, while the sum is 25.

The square root of 673522 is about 820.6838611792. The cubic root of 673522 is about 87.6564602002.

Adding to 673522 its reverse (225376), we get a palindrome (898898).

The spelling of 673522 in words is "six hundred seventy-three thousand, five hundred twenty-two".