12690680 has 16 divisors (see below), whose sum is σ = 28554120. Its totient is φ = 5076256.

The previous prime is 12690679. The next prime is 12690683. The reversal of 12690680 is 8609621.

It is a super-2 number, since 2×12690680² = 322106717724800, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12690683) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 158594 + ... + 158673.

Almost surely, 2^12690680 is an apocalyptic number.

12690680 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12690680 is an abundant number, since it is smaller than the sum of its proper divisors (15863440).

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

12690680 is a wasteful number, since it uses less digits than its factorization.

12690680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 317278 (or 317274 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 32.

The square root of 12690680 is about 3562.3980687172. The cubic root of 12690680 is about 233.2535691079.

The spelling of 12690680 in words is "twelve million, six hundred ninety thousand, six hundred eighty".