13660253 has 6 divisors (see below), whose sum is σ = 13788282. Its totient is φ = 13532960.

The previous prime is 13660249. The next prime is 13660267. The reversal of 13660253 is 35206631.

It can be written as a sum of positive squares in 3 ways, for example, as 7198489 + 6461764 = 2683^2 + 2542^2 .

It is not a de Polignac number, because 13660253 - 2² = 13660249 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13660453) 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 5 ways as a sum of consecutive naturals, for example, 48473 + ... + 48753.

It is an arithmetic number, because the mean of its divisors is an integer number (2298047).

Almost surely, 2^13660253 is an apocalyptic number.

It is an amenable number.

13660253 is a deficient number, since it is larger than the sum of its proper divisors (128029).

13660253 is an frugal number, since it uses more digits than its factorization.

13660253 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 735 (or 454 counting only the distinct ones).

The product of its (nonzero) digits is 3240, while the sum is 26.

The square root of 13660253 is about 3695.9779490684. The cubic root of 13660253 is about 239.0486237094.

Adding to 13660253 its reverse (35206631), we get a palindrome (48866884).

The spelling of 13660253 in words is "thirteen million, six hundred sixty thousand, two hundred fifty-three".