12661433 has 2 divisors, whose sum is σ = 12661434. Its totient is φ = 12661432.

The previous prime is 12661399. The next prime is 12661469. The reversal of 12661433 is 33416621.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11002489 + 1658944 = 3317^2 + 1288^2 .

It is a cyclic number.

It is not a de Polignac number, because 12661433 - 2⁸ = 12661177 is a prime.

It is a super-2 number, since 2×12661433² = 320623771226978, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (12661483) by changing a digit.

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 as a sum of consecutive naturals, namely, 6330716 + 6330717.

It is an arithmetic number, because the mean of its divisors is an integer number (6330717).

Almost surely, 2^12661433 is an apocalyptic number.

It is an amenable number.

12661433 is a deficient number, since it is larger than the sum of its proper divisors (1).

12661433 is an equidigital number, since it uses as much as digits as its factorization.

12661433 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2592, while the sum is 26.

The square root of 12661433 is about 3558.2907413532. The cubic root of 12661433 is about 233.0742455281.

The spelling of 12661433 in words is "twelve million, six hundred sixty-one thousand, four hundred thirty-three".