12752666 has 4 divisors (see below), whose sum is σ = 19129002. Its totient is φ = 6376332.

The previous prime is 12752659. The next prime is 12752671. The reversal of 12752666 is 66625721.

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., 12752041 + 625 = 3571^2 + 25^2 .

It is an unprimeable number.

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, 3188165 + ... + 3188168.

Almost surely, 2^12752666 is an apocalyptic number.

12752666 is a deficient number, since it is larger than the sum of its proper divisors (6376336).

12752666 is an equidigital number, since it uses as much as digits as its factorization.

12752666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6376335.

The product of its digits is 30240, while the sum is 35.

The square root of 12752666 is about 3571.0875094290. The cubic root of 12752666 is about 233.6327181959.

The spelling of 12752666 in words is "twelve million, seven hundred fifty-two thousand, six hundred sixty-six".