13203668 has 6 divisors (see below), whose sum is σ = 23106426. Its totient is φ = 6601832.

The previous prime is 13203653. The next prime is 13203677. The reversal of 13203668 is 86630231.

13203668 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 only one way, i.e., 12945604 + 258064 = 3598^2 + 508^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 13203668.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1650455 + ... + 1650462.

It is an arithmetic number, because the mean of its divisors is an integer number (3851071).

Almost surely, 2^13203668 is an apocalyptic number.

It is an amenable number.

13203668 is a deficient number, since it is larger than the sum of its proper divisors (9902758).

13203668 is a wasteful number, since it uses less digits than its factorization.

13203668 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3300921 (or 3300919 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 29.

The square root of 13203668 is about 3633.6851817404. The cubic root of 13203668 is about 236.3550387226.

Adding to 13203668 its reverse (86630231), we get a palindrome (99833899).

The spelling of 13203668 in words is "thirteen million, two hundred three thousand, six hundred sixty-eight".