663393 has 8 divisors (see below), whose sum is σ = 889056. Its totient is φ = 440000.

The previous prime is 663371. The next prime is 663407. The reversal of 663393 is 393366.

663393 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 663393 - 2¹⁰ = 662369 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 663393.

It is not an unprimeable number, because it can be changed into a prime (663893) 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, 313 + ... + 1193.

It is an arithmetic number, because the mean of its divisors is an integer number (111132).

2⁶⁶³³⁹³ is an apocalyptic number.

It is an amenable number.

663393 is a deficient number, since it is larger than the sum of its proper divisors (225663).

663393 is a wasteful number, since it uses less digits than its factorization.

663393 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1135.

The product of its digits is 8748, while the sum is 30.

The square root of 663393 is about 814.4894106126. The cubic root of 663393 is about 87.2148212189.

The spelling of 663393 in words is "six hundred sixty-three thousand, three hundred ninety-three".