13276621 has 4 divisors (see below), whose sum is σ = 13286592. Its totient is φ = 13266652.

The previous prime is 13276619. The next prime is 13276631. The reversal of 13276621 is 12667231.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 12667231 = 157 ⋅80683.

It is a cyclic number.

It is not a de Polignac number, because 13276621 - 2¹ = 13276619 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 13276621.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13276631) 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 in 3 ways as a sum of consecutive naturals, for example, 2611 + ... + 5776.

It is an arithmetic number, because the mean of its divisors is an integer number (3321648).

Almost surely, 2^13276621 is an apocalyptic number.

It is an amenable number.

13276621 is a deficient number, since it is larger than the sum of its proper divisors (9971).

13276621 is an equidigital number, since it uses as much as digits as its factorization.

13276621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9970.

The product of its digits is 3024, while the sum is 28.

The square root of 13276621 is about 3643.7097853699. The cubic root of 13276621 is about 236.7895429721.

The spelling of 13276621 in words is "thirteen million, two hundred seventy-six thousand, six hundred twenty-one".