12655066 has 4 divisors (see below), whose sum is σ = 18982602. Its totient is φ = 6327532.

The previous prime is 12655063. The next prime is 12655103. The reversal of 12655066 is 66055621.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 66055621 = 127 ⋅520123.

It can be written as a sum of positive squares in only one way, i.e., 12425625 + 229441 = 3525^2 + 479^2 .

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (12655063) 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, 3163765 + ... + 3163768.

Almost surely, 2^12655066 is an apocalyptic number.

12655066 is a deficient number, since it is larger than the sum of its proper divisors (6327536).

12655066 is an equidigital number, since it uses as much as digits as its factorization.

12655066 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6327535.

The product of its (nonzero) digits is 10800, while the sum is 31.

The square root of 12655066 is about 3557.3959577196. The cubic root of 12655066 is about 233.0351706319.

The spelling of 12655066 in words is "twelve million, six hundred fifty-five thousand, sixty-six".