12506811 has 8 divisors (see below), whose sum is σ = 16718160. Its totient is φ = 8316672.

The previous prime is 12506783. The next prime is 12506821. The reversal of 12506811 is 11860521.

12506811 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 12506811 - 2¹⁵ = 12474043 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12506821) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3870 + ... + 6323.

It is an arithmetic number, because the mean of its divisors is an integer number (2089770).

Almost surely, 2^12506811 is an apocalyptic number.

12506811 is a deficient number, since it is larger than the sum of its proper divisors (4211349).

12506811 is a wasteful number, since it uses less digits than its factorization.

12506811 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10605.

The product of its (nonzero) digits is 480, while the sum is 24.

The square root of 12506811 is about 3536.4969956159. The cubic root of 12506811 is about 232.1215858425.

The spelling of 12506811 in words is "twelve million, five hundred six thousand, eight hundred eleven".