12087686 has 16 divisors (see below), whose sum is σ = 20554800. Its totient is φ = 5285088.

The previous prime is 12087653. The next prime is 12087689. The reversal of 12087686 is 68678021.

It is a super-2 number, since 2×12087686² = 292224305669192, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (38).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12087689) 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 in 7 ways as a sum of consecutive naturals, for example, 11741 + ... + 12728.

It is an arithmetic number, because the mean of its divisors is an integer number (1284675).

Almost surely, 2^12087686 is an apocalyptic number.

12087686 is a deficient number, since it is larger than the sum of its proper divisors (8467114).

12087686 is a wasteful number, since it uses less digits than its factorization.

12087686 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24503.

The product of its (nonzero) digits is 32256, while the sum is 38.

The square root of 12087686 is about 3476.7349625762. The cubic root of 12087686 is about 229.4991369226.

The spelling of 12087686 in words is "twelve million, eighty-seven thousand, six hundred eighty-six".