12651612 has 12 divisors (see below), whose sum is σ = 29520456. Its totient is φ = 4217200.

The previous prime is 12651581. The next prime is 12651619. The reversal of 12651612 is 21615621.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12651619) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 527139 + ... + 527162.

It is an arithmetic number, because the mean of its divisors is an integer number (2460038).

Almost surely, 2^12651612 is an apocalyptic number.

12651612 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

12651612 is an abundant number, since it is smaller than the sum of its proper divisors (16868844).

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

12651612 is a wasteful number, since it uses less digits than its factorization.

12651612 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1054308 (or 1054306 counting only the distinct ones).

The product of its digits is 720, while the sum is 24.

The square root of 12651612 is about 3556.9104571243. The cubic root of 12651612 is about 233.0139676155.

The spelling of 12651612 in words is "twelve million, six hundred fifty-one thousand, six hundred twelve".