12643798 has 8 divisors (see below), whose sum is σ = 18985608. Its totient is φ = 6315264.

The previous prime is 12643793. The next prime is 12643811. The reversal of 12643798 is 89734621.

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

It is a self number, because there is not a number n which added to its sum of digits gives 12643798.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12643793) 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 3 ways as a sum of consecutive naturals, for example, 436 + ... + 5047.

It is an arithmetic number, because the mean of its divisors is an integer number (2373201).

Almost surely, 2^12643798 is an apocalyptic number.

12643798 is a deficient number, since it is larger than the sum of its proper divisors (6341810).

12643798 is a wasteful number, since it uses less digits than its factorization.

12643798 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6638.

The product of its digits is 72576, while the sum is 40.

The square root of 12643798 is about 3555.8118622897. The cubic root of 12643798 is about 232.9659856896.

The spelling of 12643798 in words is "twelve million, six hundred forty-three thousand, seven hundred ninety-eight".