12456667 has 2 divisors, whose sum is σ = 12456668. Its totient is φ = 12456666.

The previous prime is 12456649. The next prime is 12456671. The reversal of 12456667 is 76665421.

It is a happy number.

12456667 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 is a cyclic number.

It is not a de Polignac number, because 12456667 - 2⁷ = 12456539 is a prime.

It is a plaindrome in base 10.

It is not a weakly prime, because it can be changed into another prime (12456677) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6228333 + 6228334.

It is an arithmetic number, because the mean of its divisors is an integer number (6228334).

Almost surely, 2^12456667 is an apocalyptic number.

12456667 is a deficient number, since it is larger than the sum of its proper divisors (1).

12456667 is an equidigital number, since it uses as much as digits as its factorization.

12456667 is an evil number, because the sum of its binary digits is even.

The product of its digits is 60480, while the sum is 37.

The square root of 12456667 is about 3529.4003740012. The cubic root of 12456667 is about 231.8109525643.

The spelling of 12456667 in words is "twelve million, four hundred fifty-six thousand, six hundred sixty-seven".