12773643 has 16 divisors (see below), whose sum is σ = 18508800. Its totient is φ = 7806240.

The previous prime is 12773627. The next prime is 12773653. The reversal of 12773643 is 34637721.

It is not a de Polignac number, because 12773643 - 2⁴ = 12773627 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12773653) 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 15 ways as a sum of consecutive naturals, for example, 1848 + ... + 5381.

It is an arithmetic number, because the mean of its divisors is an integer number (1156800).

Almost surely, 2^12773643 is an apocalyptic number.

12773643 is a deficient number, since it is larger than the sum of its proper divisors (5735157).

12773643 is a wasteful number, since it uses less digits than its factorization.

12773643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7282.

The product of its digits is 21168, while the sum is 33.

The square root of 12773643 is about 3574.0233631021. The cubic root of 12773643 is about 233.7607496939.

The spelling of 12773643 in words is "twelve million, seven hundred seventy-three thousand, six hundred forty-three".