12646990 has 8 divisors (see below), whose sum is σ = 22764600. Its totient is φ = 5058792.

The previous prime is 12646981. The next prime is 12647003. The reversal of 12646990 is 9964621.

12646990 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 632340 + ... + 632359.

It is an arithmetic number, because the mean of its divisors is an integer number (2845575).

Almost surely, 2^12646990 is an apocalyptic number.

12646990 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12646990 is a deficient number, since it is larger than the sum of its proper divisors (10117610).

12646990 is a wasteful number, since it uses less digits than its factorization.

12646990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1264706.

The product of its (nonzero) digits is 23328, while the sum is 37.

The square root of 12646990 is about 3556.2606766096. The cubic root of 12646990 is about 232.9855885774.

The spelling of 12646990 in words is "twelve million, six hundred forty-six thousand, nine hundred ninety".