12747797 has 2 divisors, whose sum is σ = 12747798. Its totient is φ = 12747796.

The previous prime is 12747769. The next prime is 12747799. The reversal of 12747797 is 79774721.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12117361 + 630436 = 3481^2 + 794^2 .

It is a cyclic number.

It is not a de Polignac number, because 12747797 - 2¹² = 12743701 is a prime.

Together with 12747799, 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 (12747799) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6373898 + 6373899.

It is an arithmetic number, because the mean of its divisors is an integer number (6373899).

Almost surely, 2^12747797 is an apocalyptic number.

It is an amenable number.

12747797 is a deficient number, since it is larger than the sum of its proper divisors (1).

12747797 is an equidigital number, since it uses as much as digits as its factorization.

12747797 is an evil number, because the sum of its binary digits is even.

The product of its digits is 172872, while the sum is 44.

The square root of 12747797 is about 3570.4057192426. The cubic root of 12747797 is about 233.6029805575.

The spelling of 12747797 in words is "twelve million, seven hundred forty-seven thousand, seven hundred ninety-seven".