14091661 has 2 divisors, whose sum is σ = 14091662. Its totient is φ = 14091660.

The previous prime is 14091631. The next prime is 14091667. The reversal of 14091661 is 16619041.

14091661 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12320100 + 1771561 = 3510^2 + 1331^2 .

It is a cyclic number.

It is not a de Polignac number, because 14091661 - 2⁹ = 14091149 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (14091667) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7045830 + 7045831.

It is an arithmetic number, because the mean of its divisors is an integer number (7045831).

Almost surely, 2^14091661 is an apocalyptic number.

It is an amenable number.

14091661 is a deficient number, since it is larger than the sum of its proper divisors (1).

14091661 is an equidigital number, since it uses as much as digits as its factorization.

14091661 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1296, while the sum is 28.

The square root of 14091661 is about 3753.8861197431. The cubic root of 14091661 is about 241.5390732458.

The spelling of 14091661 in words is "fourteen million, ninety-one thousand, six hundred sixty-one".