13657741 has 2 divisors, whose sum is σ = 13657742. Its totient is φ = 13657740.

The previous prime is 13657739. The next prime is 13657747. The reversal of 13657741 is 14775631.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 13322500 + 335241 = 3650^2 + 579^2 .

It is a cyclic number.

It is not a de Polignac number, because 13657741 - 2¹ = 13657739 is a prime.

Together with 13657739, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 13657697 and 13657706.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13657747) 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 as a sum of consecutive naturals, namely, 6828870 + 6828871.

It is an arithmetic number, because the mean of its divisors is an integer number (6828871).

Almost surely, 2^13657741 is an apocalyptic number.

It is an amenable number.

13657741 is a deficient number, since it is larger than the sum of its proper divisors (1).

13657741 is an equidigital number, since it uses as much as digits as its factorization.

13657741 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 17640, while the sum is 34.

The square root of 13657741 is about 3695.6381045768. The cubic root of 13657741 is about 239.0339698335.

The spelling of 13657741 in words is "thirteen million, six hundred fifty-seven thousand, seven hundred forty-one".