12643724 has 6 divisors (see below), whose sum is σ = 22126524. Its totient is φ = 6321860.

The previous prime is 12643723. The next prime is 12643781. The reversal of 12643724 is 42734621.

It is not an unprimeable number, because it can be changed into a prime (12643723) 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 as a sum of consecutive naturals, namely, 1580462 + ... + 1580469.

It is an arithmetic number, because the mean of its divisors is an integer number (3687754).

Almost surely, 2^12643724 is an apocalyptic number.

It is an amenable number.

12643724 is a deficient number, since it is larger than the sum of its proper divisors (9482800).

12643724 is a wasteful number, since it uses less digits than its factorization.

12643724 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3160935 (or 3160933 counting only the distinct ones).

The product of its digits is 8064, while the sum is 29.

The square root of 12643724 is about 3555.8014567745. The cubic root of 12643724 is about 232.9655311976.

The spelling of 12643724 in words is "twelve million, six hundred forty-three thousand, seven hundred twenty-four".