12993646 has 8 divisors (see below), whose sum is σ = 19545840. Its totient is φ = 6478368.

The previous prime is 12993641. The next prime is 12993649. The reversal of 12993646 is 64639921.

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

It is a junction number, because it is equal to n+sod(n) for n = 12993599 and 12993608.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12993641) 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 3 ways as a sum of consecutive naturals, for example, 8331 + ... + 9766.

It is an arithmetic number, because the mean of its divisors is an integer number (2443230).

Almost surely, 2^12993646 is an apocalyptic number.

12993646 is a deficient number, since it is larger than the sum of its proper divisors (6552194).

12993646 is a wasteful number, since it uses less digits than its factorization.

12993646 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18458.

The product of its digits is 69984, while the sum is 40.

The square root of 12993646 is about 3604.6700265073. The cubic root of 12993646 is about 235.0951538608.

The spelling of 12993646 in words is "twelve million, nine hundred ninety-three thousand, six hundred forty-six".