12067681 has 2 divisors, whose sum is σ = 12067682. Its totient is φ = 12067680.

The previous prime is 12067651. The next prime is 12067687. The reversal of 12067681 is 18676021.

12067681 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11451456 + 616225 = 3384^2 + 785^2 .

It is a cyclic number.

It is not a de Polignac number, because 12067681 - 2⁷ = 12067553 is a prime.

It is a super-2 number, since 2×12067681² = 291257849435522, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (12067687) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6033840 + 6033841.

It is an arithmetic number, because the mean of its divisors is an integer number (6033841).

Almost surely, 2^12067681 is an apocalyptic number.

It is an amenable number.

12067681 is a deficient number, since it is larger than the sum of its proper divisors (1).

12067681 is an equidigital number, since it uses as much as digits as its factorization.

12067681 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4032, while the sum is 31.

The square root of 12067681 is about 3473.8567903700. The cubic root of 12067681 is about 229.3724607519.

The spelling of 12067681 in words is "twelve million, sixty-seven thousand, six hundred eighty-one".