13774997 has 2 divisors, whose sum is σ = 13774998. Its totient is φ = 13774996.

The previous prime is 13774991. The next prime is 13775009. The reversal of 13774997 is 79947731.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11566801 + 2208196 = 3401^2 + 1486^2 .

It is an emirp because it is prime and its reverse (79947731) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 13774997 - 2⁸ = 13774741 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13774991) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6887498 + 6887499.

It is an arithmetic number, because the mean of its divisors is an integer number (6887499).

Almost surely, 2^13774997 is an apocalyptic number.

It is an amenable number.

13774997 is a deficient number, since it is larger than the sum of its proper divisors (1).

13774997 is an equidigital number, since it uses as much as digits as its factorization.

13774997 is an evil number, because the sum of its binary digits is even.

The product of its digits is 333396, while the sum is 47.

The square root of 13774997 is about 3711.4683078264. The cubic root of 13774997 is about 239.7160820841.

The spelling of 13774997 in words is "thirteen million, seven hundred seventy-four thousand, nine hundred ninety-seven".