12680642 has 8 divisors (see below), whose sum is σ = 20484156. Its totient is φ = 5852592.

The previous prime is 12680641. The next prime is 12680653. The reversal of 12680642 is 24608621.

12680642 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 12666481 + 14161 = 3559^2 + 119^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (12680641) 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, 243833 + ... + 243884.

Almost surely, 2^12680642 is an apocalyptic number.

12680642 is a deficient number, since it is larger than the sum of its proper divisors (7803514).

12680642 is a wasteful number, since it uses less digits than its factorization.

12680642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 487732.

The product of its (nonzero) digits is 4608, while the sum is 29.

The square root of 12680642 is about 3560.9889075929. The cubic root of 12680642 is about 233.1920537037.

The spelling of 12680642 in words is "twelve million, six hundred eighty thousand, six hundred forty-two".