12980661 has 16 divisors (see below), whose sum is σ = 18485760. Its totient is φ = 8084160.

The previous prime is 12980633. The next prime is 12980677. The reversal of 12980661 is 16608921.

It is not a de Polignac number, because 12980661 - 2¹¹ = 12978613 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12900661) 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 15 ways as a sum of consecutive naturals, for example, 291 + ... + 5103.

It is an arithmetic number, because the mean of its divisors is an integer number (1155360).

Almost surely, 2^12980661 is an apocalyptic number.

It is an amenable number.

12980661 is a deficient number, since it is larger than the sum of its proper divisors (5505099).

12980661 is a wasteful number, since it uses less digits than its factorization.

12980661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4876.

The product of its (nonzero) digits is 5184, while the sum is 33.

The square root of 12980661 is about 3602.8684405623. The cubic root of 12980661 is about 235.0168148524.

The spelling of 12980661 in words is "twelve million, nine hundred eighty thousand, six hundred sixty-one".