13766497 has 4 divisors (see below), whose sum is σ = 13838020. Its totient is φ = 13694976.

The previous prime is 13766483. The next prime is 13766509. The reversal of 13766497 is 79466731.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 79466731 = 1117 ⋅71143.

It can be written as a sum of positive squares in 2 ways, for example, as 1347921 + 12418576 = 1161^2 + 3524^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13766497 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13766437) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 35472 + ... + 35857.

It is an arithmetic number, because the mean of its divisors is an integer number (3459505).

Almost surely, 2^13766497 is an apocalyptic number.

It is an amenable number.

13766497 is a deficient number, since it is larger than the sum of its proper divisors (71523).

13766497 is an equidigital number, since it uses as much as digits as its factorization.

13766497 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71522.

The product of its digits is 190512, while the sum is 43.

The square root of 13766497 is about 3710.3230317588. The cubic root of 13766497 is about 239.6667655350. Note that the first 3 decimals are identical.

The spelling of 13766497 in words is "thirteen million, seven hundred sixty-six thousand, four hundred ninety-seven".