12662447 has 4 divisors (see below), whose sum is σ = 14471376. Its totient is φ = 10853520.

The previous prime is 12662431. The next prime is 12662449. The reversal of 12662447 is 74426621.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 74426621 = 733 ⋅101537.

It is a cyclic number.

It is not a de Polignac number, because 12662447 - 2⁴ = 12662431 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12662449) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 904454 + ... + 904467.

It is an arithmetic number, because the mean of its divisors is an integer number (3617844).

Almost surely, 2^12662447 is an apocalyptic number.

12662447 is a deficient number, since it is larger than the sum of its proper divisors (1808929).

12662447 is an equidigital number, since it uses as much as digits as its factorization.

12662447 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1808928.

The product of its digits is 16128, while the sum is 32.

The square root of 12662447 is about 3558.4332226417. The cubic root of 12662447 is about 233.0804673351.

The spelling of 12662447 in words is "twelve million, six hundred sixty-two thousand, four hundred forty-seven".