673633 has 4 divisors (see below), whose sum is σ = 682240. Its totient is φ = 665028.

The previous prime is 673619. The next prime is 673637. The reversal of 673633 is 336376.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 673633 - 2⁹ = 673121 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 (673637) 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, 4185 + ... + 4342.

It is an arithmetic number, because the mean of its divisors is an integer number (170560).

2⁶⁷³⁶³³ is an apocalyptic number.

It is an amenable number.

673633 is a deficient number, since it is larger than the sum of its proper divisors (8607).

673633 is an equidigital number, since it uses as much as digits as its factorization.

673633 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8606.

The product of its digits is 6804, while the sum is 28.

The square root of 673633 is about 820.7514849210. The cubic root of 673633 is about 87.6612753523.

The spelling of 673633 in words is "six hundred seventy-three thousand, six hundred thirty-three".