12641996 has 12 divisors (see below), whose sum is σ = 23085552. Its totient is φ = 6046128.

The previous prime is 12641987. The next prime is 12642001. The reversal of 12641996 is 69914621.

It is a super-3 number, since 3×12641996³ (a number of 22 digits) contains 333 as substring.

It is an unprimeable number.

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, 68615 + ... + 68798.

It is an arithmetic number, because the mean of its divisors is an integer number (1923796).

Almost surely, 2^12641996 is an apocalyptic number.

It is an amenable number.

12641996 is a deficient number, since it is larger than the sum of its proper divisors (10443556).

12641996 is a wasteful number, since it uses less digits than its factorization.

12641996 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 137440 (or 137438 counting only the distinct ones).

The product of its digits is 23328, while the sum is 38.

The square root of 12641996 is about 3555.5584652766. The cubic root of 12641996 is about 232.9549176901.

The spelling of 12641996 in words is "twelve million, six hundred forty-one thousand, nine hundred ninety-six".