12664798 has 4 divisors (see below), whose sum is σ = 18997200. Its totient is φ = 6332398.

The previous prime is 12664781. The next prime is 12664807. The reversal of 12664798 is 89746621.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3166198 + ... + 3166201.

It is an arithmetic number, because the mean of its divisors is an integer number (4749300).

Almost surely, 2^12664798 is an apocalyptic number.

12664798 is a deficient number, since it is larger than the sum of its proper divisors (6332402).

12664798 is an equidigital number, since it uses as much as digits as its factorization.

12664798 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6332401.

The product of its digits is 145152, while the sum is 43.

The square root of 12664798 is about 3558.7635493244. The cubic root of 12664798 is about 233.0948915684.

The spelling of 12664798 in words is "twelve million, six hundred sixty-four thousand, seven hundred ninety-eight".