12644650 has 12 divisors (see below), whose sum is σ = 23519142. Its totient is φ = 5057840.

The previous prime is 12644591. The next prime is 12644669. The reversal of 12644650 is 5644621.

It can be written as a sum of positive squares in 3 ways, for example, as 8196769 + 4447881 = 2863^2 + 2109^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 126397 + ... + 126496.

Almost surely, 2^12644650 is an apocalyptic number.

12644650 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12644650 is a deficient number, since it is larger than the sum of its proper divisors (10874492).

12644650 is a wasteful number, since it uses less digits than its factorization.

12644650 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 252905 (or 252900 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 28.

The square root of 12644650 is about 3555.9316641353. The cubic root of 12644650 is about 232.9712183621.

The spelling of 12644650 in words is "twelve million, six hundred forty-four thousand, six hundred fifty".