11648221 has 8 divisors (see below), whose sum is σ = 12586784. Its totient is φ = 10715760.

The previous prime is 11648209. The next prime is 11648237. The reversal of 11648221 is 12284611.

11648221 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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 11648221 - 2⁷ = 11648093 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 (11648201) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2950 + ... + 5656.

It is an arithmetic number, because the mean of its divisors is an integer number (1573348).

Almost surely, 2^11648221 is an apocalyptic number.

It is an amenable number.

11648221 is a deficient number, since it is larger than the sum of its proper divisors (938563).

11648221 is a wasteful number, since it uses less digits than its factorization.

11648221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3051.

The product of its digits is 768, while the sum is 25.

The square root of 11648221 is about 3412.9490180781. The cubic root of 11648221 is about 226.6834779438.

The spelling of 11648221 in words is "eleven million, six hundred forty-eight thousand, two hundred twenty-one".