14665421 has 4 divisors (see below), whose sum is σ = 15303072. Its totient is φ = 14027772.

The previous prime is 14665403. The next prime is 14665423. The reversal of 14665421 is 12456641.

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: 12456641 = 79 ⋅157679.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-14665421 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 (14665423) 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, 318791 + ... + 318836.

It is an arithmetic number, because the mean of its divisors is an integer number (3825768).

Almost surely, 2^14665421 is an apocalyptic number.

It is an amenable number.

14665421 is a deficient number, since it is larger than the sum of its proper divisors (637651).

14665421 is an equidigital number, since it uses as much as digits as its factorization.

14665421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 637650.

The product of its digits is 5760, while the sum is 29.

The square root of 14665421 is about 3829.5457955220. The cubic root of 14665421 is about 244.7737519827.

The spelling of 14665421 in words is "fourteen million, six hundred sixty-five thousand, four hundred twenty-one".