13528663 has 4 divisors (see below), whose sum is σ = 13559920. Its totient is φ = 13497408.

The previous prime is 13528661. The next prime is 13528667. The reversal of 13528663 is 36682531.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 13528663 - 2¹ = 13528661 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13528661) 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, 14970 + ... + 15847.

It is an arithmetic number, because the mean of its divisors is an integer number (3389980).

Almost surely, 2^13528663 is an apocalyptic number.

13528663 is a deficient number, since it is larger than the sum of its proper divisors (31257).

13528663 is an equidigital number, since it uses as much as digits as its factorization.

13528663 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31256.

The product of its digits is 25920, while the sum is 34.

The square root of 13528663 is about 3678.1330862273. The cubic root of 13528663 is about 238.2785559910.

The spelling of 13528663 in words is "thirteen million, five hundred twenty-eight thousand, six hundred sixty-three".