13884661 has 4 divisors (see below), whose sum is σ = 15868192. Its totient is φ = 11901132.

The previous prime is 13884659. The next prime is 13884667. The reversal of 13884661 is 16648831.

13884661 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 16648831 = 17 ⋅979343.

It is a cyclic number.

It is not a de Polignac number, because 13884661 - 2¹ = 13884659 is a prime.

It is a super-2 number, since 2×13884661² = 385567622169842, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 13884661.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13884667) 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, 991755 + ... + 991768.

It is an arithmetic number, because the mean of its divisors is an integer number (3967048).

Almost surely, 2^13884661 is an apocalyptic number.

It is an amenable number.

13884661 is a deficient number, since it is larger than the sum of its proper divisors (1983531).

13884661 is an equidigital number, since it uses as much as digits as its factorization.

13884661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1983530.

The product of its digits is 27648, while the sum is 37.

The square root of 13884661 is about 3726.2126885083. The cubic root of 13884661 is about 240.3505352255.

The spelling of 13884661 in words is "thirteen million, eight hundred eighty-four thousand, six hundred sixty-one".