14431661 has 4 divisors (see below), whose sum is σ = 14448924. Its totient is φ = 14414400.

The previous prime is 14431643. The next prime is 14431687. The reversal of 14431661 is 16613441.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 16613441 = 13 ⋅1277957.

It can be written as a sum of positive squares in 2 ways, for example, as 697225 + 13734436 = 835^2 + 3706^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-14431661 is a prime.

It is a super-3 number, since 3×14431661³ (a number of 22 digits) contains 333 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 14431661.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (14439661) 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, 7310 + ... + 9071.

It is an arithmetic number, because the mean of its divisors is an integer number (3612231).

Almost surely, 2^14431661 is an apocalyptic number.

It is an amenable number.

14431661 is a deficient number, since it is larger than the sum of its proper divisors (17263).

14431661 is an equidigital number, since it uses as much as digits as its factorization.

14431661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17262.

The product of its digits is 1728, while the sum is 26.

The square root of 14431661 is about 3798.9026047005. The cubic root of 14431661 is about 243.4662535611.

The spelling of 14431661 in words is "fourteen million, four hundred thirty-one thousand, six hundred sixty-one".