12866474 has 4 divisors (see below), whose sum is σ = 19299714. Its totient is φ = 6433236.

The previous prime is 12866473. The next prime is 12866537. The reversal of 12866474 is 47466821.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 12780625 + 85849 = 3575^2 + 293^2 .

It is not an unprimeable number, because it can be changed into a prime (12866473) 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, 3216617 + ... + 3216620.

Almost surely, 2^12866474 is an apocalyptic number.

12866474 is a deficient number, since it is larger than the sum of its proper divisors (6433240).

12866474 is an equidigital number, since it uses as much as digits as its factorization.

12866474 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6433239.

The product of its digits is 64512, while the sum is 38.

The square root of 12866474 is about 3586.9867577118. The cubic root of 12866474 is about 234.3256599901.

The spelling of 12866474 in words is "twelve million, eight hundred sixty-six thousand, four hundred seventy-four".