12667712 has 14 divisors (see below), whose sum is σ = 25137618. Its totient is φ = 6333824.

The previous prime is 12667667. The next prime is 12667777. The reversal of 12667712 is 21776621.

It can be written as a sum of positive squares in only one way, i.e., 6635776 + 6031936 = 2576^2 + 2456^2 .

It is a Harshad number since it is a multiple of its sum of digits (32).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 98903 + ... + 99030.

Almost surely, 2^12667712 is an apocalyptic number.

It is an amenable number.

12667712 is a deficient number, since it is larger than the sum of its proper divisors (12469906).

12667712 is an equidigital number, since it uses as much as digits as its factorization.

12667712 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 197945 (or 197935 counting only the distinct ones).

The product of its digits is 7056, while the sum is 32.

The square root of 12667712 is about 3559.1729376359. The cubic root of 12667712 is about 233.1127675325.

The spelling of 12667712 in words is "twelve million, six hundred sixty-seven thousand, seven hundred twelve".