673564 has 6 divisors (see below), whose sum is σ = 1178744. Its totient is φ = 336780.

The previous prime is 673553. The next prime is 673567. The reversal of 673564 is 465376.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (673567) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 84192 + ... + 84199.

2⁶⁷³⁵⁶⁴ is an apocalyptic number.

It is an amenable number.

673564 is a deficient number, since it is larger than the sum of its proper divisors (505180).

673564 is a wasteful number, since it uses less digits than its factorization.

673564 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 168395 (or 168393 counting only the distinct ones).

The product of its digits is 15120, while the sum is 31.

The square root of 673564 is about 820.7094491962. The cubic root of 673564 is about 87.6582822119.

The spelling of 673564 in words is "six hundred seventy-three thousand, five hundred sixty-four".