13260997 has 4 divisors (see below), whose sum is σ = 13392396. Its totient is φ = 13129600.

The previous prime is 13260983. The next prime is 13261009. The reversal of 13260997 is 79906231.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 79906231 = 1439 ⋅55529.

It can be written as a sum of positive squares in 2 ways, for example, as 7568001 + 5692996 = 2751^2 + 2386^2 .

It is a cyclic number.

It is not a de Polignac number, because 13260997 - 2⁷ = 13260869 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13260497) 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 in 3 ways as a sum of consecutive naturals, for example, 65548 + ... + 65749.

It is an arithmetic number, because the mean of its divisors is an integer number (3348099).

Almost surely, 2^13260997 is an apocalyptic number.

It is an amenable number.

13260997 is a deficient number, since it is larger than the sum of its proper divisors (131399).

13260997 is a wasteful number, since it uses less digits than its factorization.

13260997 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 131398.

The product of its (nonzero) digits is 20412, while the sum is 37.

The square root of 13260997 is about 3641.5651854663. The cubic root of 13260997 is about 236.6966214372.

The spelling of 13260997 in words is "thirteen million, two hundred sixty thousand, nine hundred ninety-seven".