13261797 has 6 divisors (see below), whose sum is σ = 19155942. Its totient is φ = 8841192.

The previous prime is 13261789. The next prime is 13261813. The reversal of 13261797 is 79716231.

It is a happy number.

13261797 is a `hidden beast` number, since 1 + 32 + 617 + 9 + 7 = 666.

It can be written as a sum of positive squares in only one way, i.e., 12489156 + 772641 = 3534^2 + 879^2 .

It is not a de Polignac number, because 13261797 - 2³ = 13261789 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13261747) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 736758 + ... + 736775.

It is an arithmetic number, because the mean of its divisors is an integer number (3192657).

Almost surely, 2^13261797 is an apocalyptic number.

It is an amenable number.

13261797 is a deficient number, since it is larger than the sum of its proper divisors (5894145).

13261797 is a wasteful number, since it uses less digits than its factorization.

13261797 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1473539 (or 1473536 counting only the distinct ones).

The product of its digits is 15876, while the sum is 36.

The square root of 13261797 is about 3641.6750266876. The cubic root of 13261797 is about 236.7013810966.

The spelling of 13261797 in words is "thirteen million, two hundred sixty-one thousand, seven hundred ninety-seven".