12611686 has 4 divisors (see below), whose sum is σ = 18917532. Its totient is φ = 6305842.

The previous prime is 12611633. The next prime is 12611693. The reversal of 12611686 is 68611621.

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

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3152920 + ... + 3152923.

It is an arithmetic number, because the mean of its divisors is an integer number (4729383).

Almost surely, 2^12611686 is an apocalyptic number.

12611686 is a deficient number, since it is larger than the sum of its proper divisors (6305846).

12611686 is an equidigital number, since it uses as much as digits as its factorization.

12611686 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6305845.

The product of its digits is 3456, while the sum is 31.

The square root of 12611686 is about 3551.2935671386. The cubic root of 12611686 is about 232.7685938943.

The spelling of 12611686 in words is "twelve million, six hundred eleven thousand, six hundred eighty-six".