14403661 has 4 divisors (see below), whose sum is σ = 14427772. Its totient is φ = 14379552.

The previous prime is 14403647. The next prime is 14403677. The reversal of 14403661 is 16630441.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 16630441 = 547 ⋅30403.

It can be written as a sum of positive squares in 2 ways, for example, as 4284900 + 10118761 = 2070^2 + 3181^2 .

It is a cyclic number.

It is not a de Polignac number, because 14403661 - 2⁵ = 14403629 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 (14403061) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11136 + ... + 12361.

It is an arithmetic number, because the mean of its divisors is an integer number (3606943).

Almost surely, 2^14403661 is an apocalyptic number.

It is an amenable number.

14403661 is a deficient number, since it is larger than the sum of its proper divisors (24111).

14403661 is an equidigital number, since it uses as much as digits as its factorization.

14403661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24110.

The product of its (nonzero) digits is 1728, while the sum is 25.

The square root of 14403661 is about 3795.2155406511. The cubic root of 14403661 is about 243.3086956144.

The spelling of 14403661 in words is "fourteen million, four hundred three thousand, six hundred sixty-one".