12661682 has 12 divisors (see below), whose sum is σ = 20876478. Its totient is φ = 5755200.

The previous prime is 12661679. The next prime is 12661699. The reversal of 12661682 is 28616621.

It can be written as a sum of positive squares in only one way, i.e., 11703241 + 958441 = 3421^2 + 979^2 .

It is an unprimeable number.

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 5 ways as a sum of consecutive naturals, for example, 25919 + ... + 26402.

Almost surely, 2^12661682 is an apocalyptic number.

12661682 is a deficient number, since it is larger than the sum of its proper divisors (8214796).

12661682 is a wasteful number, since it uses less digits than its factorization.

12661682 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52345 (or 52334 counting only the distinct ones).

The product of its digits is 6912, while the sum is 32.

The square root of 12661682 is about 3558.3257298904. The cubic root of 12661682 is about 233.0757733990.

The spelling of 12661682 in words is "twelve million, six hundred sixty-one thousand, six hundred eighty-two".