13206491 has 2 divisors, whose sum is σ = 13206492. Its totient is φ = 13206490.

The previous prime is 13206449. The next prime is 13206493. The reversal of 13206491 is 19460231.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 13206491 - 2²² = 9012187 is a prime.

It is a super-2 number, since 2×13206491² = 348822809066162, which contains 22 as substring.

Together with 13206493, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 13206491.

It is not a weakly prime, because it can be changed into another prime (13206493) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6603245 + 6603246.

It is an arithmetic number, because the mean of its divisors is an integer number (6603246).

Almost surely, 2^13206491 is an apocalyptic number.

13206491 is a deficient number, since it is larger than the sum of its proper divisors (1).

13206491 is an equidigital number, since it uses as much as digits as its factorization.

13206491 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1296, while the sum is 26.

The square root of 13206491 is about 3634.0736096012. The cubic root of 13206491 is about 236.3718820909.

The spelling of 13206491 in words is "thirteen million, two hundred six thousand, four hundred ninety-one".