13266397 has 2 divisors, whose sum is σ = 13266398. Its totient is φ = 13266396.

The previous prime is 13266371. The next prime is 13266413. The reversal of 13266397 is 79366231.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9369721 + 3896676 = 3061^2 + 1974^2 .

It is a cyclic number.

It is not a de Polignac number, because 13266397 - 2¹⁹ = 12742109 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13266347) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6633198 + 6633199.

It is an arithmetic number, because the mean of its divisors is an integer number (6633199).

Almost surely, 2^13266397 is an apocalyptic number.

It is an amenable number.

13266397 is a deficient number, since it is larger than the sum of its proper divisors (1).

13266397 is an equidigital number, since it uses as much as digits as its factorization.

13266397 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 40824, while the sum is 37.

The square root of 13266397 is about 3642.3065494272. The cubic root of 13266397 is about 236.7287454246.

The spelling of 13266397 in words is "thirteen million, two hundred sixty-six thousand, three hundred ninety-seven".