12768621 has 16 divisors (see below), whose sum is σ = 17676288. Its totient is φ = 8190000.

The previous prime is 12768619. The next prime is 12768641. The reversal of 12768621 is 12686721.

It is not a de Polignac number, because 12768621 - 2¹ = 12768619 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12768641) 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 15 ways as a sum of consecutive naturals, for example, 23070 + ... + 23616.

It is an arithmetic number, because the mean of its divisors is an integer number (1104768).

Almost surely, 2^12768621 is an apocalyptic number.

It is an amenable number.

12768621 is a deficient number, since it is larger than the sum of its proper divisors (4907667).

12768621 is a wasteful number, since it uses less digits than its factorization.

12768621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 832.

The product of its digits is 8064, while the sum is 33.

The square root of 12768621 is about 3573.3207244802. The cubic root of 12768621 is about 233.7301110743.

The spelling of 12768621 in words is "twelve million, seven hundred sixty-eight thousand, six hundred twenty-one".