13766749 has 2 divisors, whose sum is σ = 13766750. Its totient is φ = 13766748.

The previous prime is 13766747. The next prime is 13766761. The reversal of 13766749 is 94766731.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 12924025 + 842724 = 3595^2 + 918^2 .

It is a cyclic number.

It is not a de Polignac number, because 13766749 - 2¹ = 13766747 is a prime.

Together with 13766747, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13766741) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6883374 + 6883375.

It is an arithmetic number, because the mean of its divisors is an integer number (6883375).

Almost surely, 2^13766749 is an apocalyptic number.

It is an amenable number.

13766749 is a deficient number, since it is larger than the sum of its proper divisors (1).

13766749 is an equidigital number, since it uses as much as digits as its factorization.

13766749 is an evil number, because the sum of its binary digits is even.

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

The square root of 13766749 is about 3710.3569909107. The cubic root of 13766749 is about 239.6682279176.

The spelling of 13766749 in words is "thirteen million, seven hundred sixty-six thousand, seven hundred forty-nine".