663353 has 4 divisors (see below), whose sum is σ = 672768. Its totient is φ = 653940.

The previous prime is 663349. The next prime is 663359. The reversal of 663353 is 353366.

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 663353 - 2² = 663349 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (663359) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4601 + ... + 4742.

It is an arithmetic number, because the mean of its divisors is an integer number (168192).

2⁶⁶³³⁵³ is an apocalyptic number.

It is an amenable number.

663353 is a deficient number, since it is larger than the sum of its proper divisors (9415).

663353 is an equidigital number, since it uses as much as digits as its factorization.

663353 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9414.

The product of its digits is 4860, while the sum is 26.

The square root of 663353 is about 814.4648549815. The cubic root of 663353 is about 87.2130682796.

The spelling of 663353 in words is "six hundred sixty-three thousand, three hundred fifty-three".