13569797 has 2 divisors, whose sum is σ = 13569798. Its totient is φ = 13569796.

The previous prime is 13569779. The next prime is 13569799. The reversal of 13569797 is 79796531.

It is a happy number.

13569797 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

Together with previous prime (13569779) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8579041 + 4990756 = 2929^2 + 2234^2 .

It is a cyclic number.

It is not a de Polignac number, because 13569797 - 2¹⁴ = 13553413 is a prime.

Together with 13569799, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13569799) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6784898 + 6784899.

It is an arithmetic number, because the mean of its divisors is an integer number (6784899).

Almost surely, 2^13569797 is an apocalyptic number.

It is an amenable number.

13569797 is a deficient number, since it is larger than the sum of its proper divisors (1).

13569797 is an equidigital number, since it uses as much as digits as its factorization.

13569797 is an evil number, because the sum of its binary digits is even.

The product of its digits is 357210, while the sum is 47.

The square root of 13569797 is about 3683.7205377173. The cubic root of 13569797 is about 238.5198075514.

The spelling of 13569797 in words is "thirteen million, five hundred sixty-nine thousand, seven hundred ninety-seven".