12649568 has 48 divisors (see below), whose sum is σ = 26444880. Its totient is φ = 5945856.

The previous prime is 12649561. The next prime is 12649577. The reversal of 12649568 is 86594621.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12649561) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 39746 + ... + 40062.

It is an arithmetic number, because the mean of its divisors is an integer number (550935).

Almost surely, 2^12649568 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12649568, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13222440).

12649568 is an abundant number, since it is smaller than the sum of its proper divisors (13795312).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12649568 is a wasteful number, since it uses less digits than its factorization.

12649568 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 399 (or 391 counting only the distinct ones).

The product of its digits is 103680, while the sum is 41.

The square root of 12649568 is about 3556.6231175091. The cubic root of 12649568 is about 233.0014183266.

It can be divided in two parts, 126 and 49568, that added together give a palindrome (49694).

The spelling of 12649568 in words is "twelve million, six hundred forty-nine thousand, five hundred sixty-eight".