663173 has 8 divisors (see below), whose sum is σ = 763200. Its totient is φ = 564480.

The previous prime is 663167. The next prime is 663191. The reversal of 663173 is 371366.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 663173 - 2⁸ = 662917 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 (663163) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1253 + ... + 1701.

It is an arithmetic number, because the mean of its divisors is an integer number (95400).

2⁶⁶³¹⁷³ is an apocalyptic number.

It is an amenable number.

663173 is a deficient number, since it is larger than the sum of its proper divisors (100027).

663173 is a wasteful number, since it uses less digits than its factorization.

663173 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 667.

The product of its digits is 2268, while the sum is 26.

The square root of 663173 is about 814.3543454787. The cubic root of 663173 is about 87.2051791806.

The spelling of 663173 in words is "six hundred sixty-three thousand, one hundred seventy-three".