663346 has 8 divisors (see below), whose sum is σ = 1029420. Its totient is φ = 320208.

The previous prime is 663331. The next prime is 663349. The reversal of 663346 is 643366.

663346 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 657721 + 5625 = 811^2 + 75^2 .

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

It is a super-3 number, since 3×663346³ = 875672273335637208, which contains 333 as substring.

It is a d-powerful number, because it can be written as 6² + 6³ + 3¹¹ + 3¹¹ + 4⁹ + 6⁶ .

It is not an unprimeable number, because it can be changed into a prime (663349) 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, 5661 + ... + 5776.

2⁶⁶³³⁴⁶ is an apocalyptic number.

663346 is a deficient number, since it is larger than the sum of its proper divisors (366074).

663346 is a wasteful number, since it uses less digits than its factorization.

663346 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11468.

The product of its digits is 7776, while the sum is 28.

The square root of 663346 is about 814.4605576699. The cubic root of 663346 is about 87.2127615080.

The spelling of 663346 in words is "six hundred sixty-three thousand, three hundred forty-six".