12736660 has 24 divisors (see below), whose sum is σ = 27611136. Its totient is φ = 4930080.

The previous prime is 12736651. The next prime is 12736679. The reversal of 12736660 is 6663721.

It is a super-3 number, since 3×12736660³ (a number of 22 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9652 + ... + 10891.

It is an arithmetic number, because the mean of its divisors is an integer number (1150464).

Almost surely, 2^12736660 is an apocalyptic number.

12736660 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12736660 is an abundant number, since it is smaller than the sum of its proper divisors (14874476).

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

12736660 is a wasteful number, since it uses less digits than its factorization.

12736660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20583 (or 20581 counting only the distinct ones).

The product of its (nonzero) digits is 9072, while the sum is 31.

The square root of 12736660 is about 3568.8457517803. The cubic root of 12736660 is about 233.5349323451.

The spelling of 12736660 in words is "twelve million, seven hundred thirty-six thousand, six hundred sixty".