12655897 has 2 divisors, whose sum is σ = 12655898. Its totient is φ = 12655896.

The previous prime is 12655873. The next prime is 12655901. The reversal of 12655897 is 79855621.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11909401 + 746496 = 3451^2 + 864^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12655897 is a prime.

It is not a weakly prime, because it can be changed into another prime (12655807) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6327948 + 6327949.

It is an arithmetic number, because the mean of its divisors is an integer number (6327949).

Almost surely, 2^12655897 is an apocalyptic number.

It is an amenable number.

12655897 is a deficient number, since it is larger than the sum of its proper divisors (1).

12655897 is an equidigital number, since it uses as much as digits as its factorization.

12655897 is an evil number, because the sum of its binary digits is even.

The product of its digits is 151200, while the sum is 43.

The square root of 12655897 is about 3557.5127547206. The cubic root of 12655897 is about 233.0402713030.

The spelling of 12655897 in words is "twelve million, six hundred fifty-five thousand, eight hundred ninety-seven".