13816663 has 8 divisors (see below), whose sum is σ = 15840032. Its totient is φ = 11805696.

The previous prime is 13816661. The next prime is 13816681. The reversal of 13816663 is 36661831.

It is a happy number.

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

It is not a de Polignac number, because 13816663 - 2¹ = 13816661 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 (13816661) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 570 + ... + 5287.

It is an arithmetic number, because the mean of its divisors is an integer number (1980004).

Almost surely, 2^13816663 is an apocalyptic number.

13816663 is a deficient number, since it is larger than the sum of its proper divisors (2023369).

13816663 is an equidigital number, since it uses as much as digits as its factorization.

13816663 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6201.

The product of its digits is 15552, while the sum is 34.

The square root of 13816663 is about 3717.0772120041. The cubic root of 13816663 is about 239.9575329953.

The spelling of 13816663 in words is "thirteen million, eight hundred sixteen thousand, six hundred sixty-three".