12662506 has 4 divisors (see below), whose sum is σ = 18993762. Its totient is φ = 6331252.

The previous prime is 12662491. The next prime is 12662509. The reversal of 12662506 is 60526621.

12662506 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 60526621 = 709 ⋅85369.

It can be written as a sum of positive squares in only one way, i.e., 12567025 + 95481 = 3545^2 + 309^2 .

It is not an unprimeable number, because it can be changed into a prime (12662509) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3165625 + ... + 3165628.

Almost surely, 2^12662506 is an apocalyptic number.

12662506 is a deficient number, since it is larger than the sum of its proper divisors (6331256).

12662506 is an equidigital number, since it uses as much as digits as its factorization.

12662506 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6331255.

The product of its (nonzero) digits is 4320, while the sum is 28.

The square root of 12662506 is about 3558.4415127974. The cubic root of 12662506 is about 233.0808293432.

The spelling of 12662506 in words is "twelve million, six hundred sixty-two thousand, five hundred six".