14249666 has 4 divisors (see below), whose sum is σ = 21374502. Its totient is φ = 7124832.

The previous prime is 14249647. The next prime is 14249687. The reversal of 14249666 is 66694241.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 66694241 = 3547 ⋅18803.

It can be written as a sum of positive squares in only one way, i.e., 12103441 + 2146225 = 3479^2 + 1465^2 .

It is a super-2 number, since 2×14249666² = 406105962223112, which contains 22 as substring.

It is a Curzon number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 3562415 + ... + 3562418.

Almost surely, 2^14249666 is an apocalyptic number.

14249666 is a deficient number, since it is larger than the sum of its proper divisors (7124836).

14249666 is an equidigital number, since it uses as much as digits as its factorization.

14249666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7124835.

The product of its digits is 62208, while the sum is 38.

The square root of 14249666 is about 3774.8729779954. The cubic root of 14249666 is about 242.4384851231.

The spelling of 14249666 in words is "fourteen million, two hundred forty-nine thousand, six hundred sixty-six".