12648813 has 8 divisors (see below), whose sum is σ = 17752800. Its totient is φ = 7988688.

The previous prime is 12648809. The next prime is 12648829. The reversal of 12648813 is 31884621.

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

It is not a de Polignac number, because 12648813 - 2² = 12648809 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12648893) 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, 110898 + ... + 111011.

It is an arithmetic number, because the mean of its divisors is an integer number (2219100).

Almost surely, 2^12648813 is an apocalyptic number.

It is an amenable number.

12648813 is a deficient number, since it is larger than the sum of its proper divisors (5103987).

12648813 is a wasteful number, since it uses less digits than its factorization.

12648813 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 221931.

The product of its digits is 9216, while the sum is 33.

The square root of 12648813 is about 3556.5169759190. The cubic root of 12648813 is about 232.9967826064.

The spelling of 12648813 in words is "twelve million, six hundred forty-eight thousand, eight hundred thirteen".