13648621 has 8 divisors (see below), whose sum is σ = 15656960. Its totient is φ = 11654928.

The previous prime is 13648619. The next prime is 13648681. The reversal of 13648621 is 12684631.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 13648621 - 2¹ = 13648619 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 (13648681) 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 7 ways as a sum of consecutive naturals, for example, 1581 + ... + 5458.

It is an arithmetic number, because the mean of its divisors is an integer number (1957120).

Almost surely, 2^13648621 is an apocalyptic number.

It is an amenable number.

13648621 is a deficient number, since it is larger than the sum of its proper divisors (2008339).

13648621 is an equidigital number, since it uses as much as digits as its factorization.

13648621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7323.

The product of its digits is 6912, while the sum is 31.

The square root of 13648621 is about 3694.4040114747. The cubic root of 13648621 is about 238.9807527552.

The spelling of 13648621 in words is "thirteen million, six hundred forty-eight thousand, six hundred twenty-one".