12276643 has 2 divisors, whose sum is σ = 12276644. Its totient is φ = 12276642.

The previous prime is 12276631. The next prime is 12276683. The reversal of 12276643 is 34667221.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 12276643 - 2¹⁷ = 12145571 is a prime.

It is a plaindrome in base 15.

It is not a weakly prime, because it can be changed into another prime (12276683) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6138321 + 6138322.

It is an arithmetic number, because the mean of its divisors is an integer number (6138322).

Almost surely, 2^12276643 is an apocalyptic number.

12276643 is a deficient number, since it is larger than the sum of its proper divisors (1).

12276643 is an equidigital number, since it uses as much as digits as its factorization.

12276643 is an evil number, because the sum of its binary digits is even.

The product of its digits is 12096, while the sum is 31.

The square root of 12276643 is about 3503.8040755727. The cubic root of 12276643 is about 230.6888171990.

The spelling of 12276643 in words is "twelve million, two hundred seventy-six thousand, six hundred forty-three".