14663681 has 2 divisors, whose sum is σ = 14663682. Its totient is φ = 14663680.

The previous prime is 14663659. The next prime is 14663689. The reversal of 14663681 is 18636641.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 10627600 + 4036081 = 3260^2 + 2009^2 .

It is a cyclic number.

It is not a de Polignac number, because 14663681 - 2⁶ = 14663617 is a prime.

It is a super-2 number, since 2×14663681² = 430047080939522, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (14663689) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7331840 + 7331841.

It is an arithmetic number, because the mean of its divisors is an integer number (7331841).

It is a Proth number, since it is equal to 895 ⋅ 2¹⁴ + 1 and 895 < 2¹⁴.

Almost surely, 2^14663681 is an apocalyptic number.

It is an amenable number.

14663681 is a deficient number, since it is larger than the sum of its proper divisors (1).

14663681 is an equidigital number, since it uses as much as digits as its factorization.

14663681 is an evil number, because the sum of its binary digits is even.

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

The square root of 14663681 is about 3829.3186077943. The cubic root of 14663681 is about 244.7640710883.

The spelling of 14663681 in words is "fourteen million, six hundred sixty-three thousand, six hundred eighty-one".