14666381 has 2 divisors, whose sum is σ = 14666382. Its totient is φ = 14666380.

The previous prime is 14666363. The next prime is 14666389. The reversal of 14666381 is 18366641.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 14478025 + 188356 = 3805^2 + 434^2 .

It is a cyclic number.

It is not a de Polignac number, because 14666381 - 2¹⁸ = 14404237 is a prime.

It is a super-2 number, since 2×14666381² = 430205463274322, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (14666389) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7333190 + 7333191.

It is an arithmetic number, because the mean of its divisors is an integer number (7333191).

Almost surely, 2^14666381 is an apocalyptic number.

It is an amenable number.

14666381 is a deficient number, since it is larger than the sum of its proper divisors (1).

14666381 is an equidigital number, since it uses as much as digits as its factorization.

14666381 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 20736, while the sum is 35.

The square root of 14666381 is about 3829.6711347060. The cubic root of 14666381 is about 244.7790928380.

The spelling of 14666381 in words is "fourteen million, six hundred sixty-six thousand, three hundred eighty-one".