673556 has 12 divisors (see below), whose sum is σ = 1269492. Its totient is φ = 310848.

The previous prime is 673553. The next prime is 673567. The reversal of 673556 is 655376.

It can be written as a sum of positive squares in 2 ways, for example, as 80656 + 592900 = 284^2 + 770^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (673553) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6425 + ... + 6528.

It is an arithmetic number, because the mean of its divisors is an integer number (105791).

2⁶⁷³⁵⁵⁶ is an apocalyptic number.

It is an amenable number.

673556 is a deficient number, since it is larger than the sum of its proper divisors (595936).

673556 is a wasteful number, since it uses less digits than its factorization.

673556 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12970 (or 12968 counting only the distinct ones).

The product of its digits is 18900, while the sum is 32.

The square root of 673556 is about 820.7045753497. The cubic root of 673556 is about 87.6579351679.

The spelling of 673556 in words is "six hundred seventy-three thousand, five hundred fifty-six".