13796621 has 4 divisors (see below), whose sum is σ = 13815744. Its totient is φ = 13777500.

The previous prime is 13796617. The next prime is 13796633. The reversal of 13796621 is 12669731.

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 an emirpimes, since its reverse is a distinct semiprime: 12669731 = 31 ⋅408701.

It is a cyclic number.

It is not a de Polignac number, because 13796621 - 2² = 13796617 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 (13796611) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8435 + ... + 9936.

It is an arithmetic number, because the mean of its divisors is an integer number (3453936).

Almost surely, 2^13796621 is an apocalyptic number.

It is an amenable number.

13796621 is a deficient number, since it is larger than the sum of its proper divisors (19123).

13796621 is an equidigital number, since it uses as much as digits as its factorization.

13796621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19122.

The product of its digits is 13608, while the sum is 35.

The square root of 13796621 is about 3714.3802982463. The cubic root of 13796621 is about 239.8414519966.

It can be divided in two parts, 1379 and 6621, that added together give a cube (8000 = 20³).

The spelling of 13796621 in words is "thirteen million, seven hundred ninety-six thousand, six hundred twenty-one".