663193 has 4 divisors (see below), whose sum is σ = 664848. Its totient is φ = 661540.

The previous prime is 663191. The next prime is 663203. The reversal of 663193 is 391366.

663193 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, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 663193 - 2¹ = 663191 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (663191) 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, 198 + ... + 1168.

It is an arithmetic number, because the mean of its divisors is an integer number (166212).

2⁶⁶³¹⁹³ is an apocalyptic number.

It is an amenable number.

663193 is a deficient number, since it is larger than the sum of its proper divisors (1655).

663193 is an equidigital number, since it uses as much as digits as its factorization.

663193 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1654.

The product of its digits is 2916, while the sum is 28.

The square root of 663193 is about 814.3666250529. The cubic root of 663193 is about 87.2060558177.

It can be divided in two parts, 6631 and 93, that added together give a square (6724 = 82²).

The spelling of 663193 in words is "six hundred sixty-three thousand, one hundred ninety-three".