12666486 has 16 divisors (see below), whose sum is σ = 28952064. Its totient is φ = 3618984.

The previous prime is 12666461. The next prime is 12666503. The reversal of 12666486 is 68466621.

12666486 = 1778² + 1779² + ... + 1781².

It is a congruent number.

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 in 7 ways as a sum of consecutive naturals, for example, 150750 + ... + 150833.

It is an arithmetic number, because the mean of its divisors is an integer number (1809504).

Almost surely, 2^12666486 is an apocalyptic number.

12666486 is an abundant number, since it is smaller than the sum of its proper divisors (16285578).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12666486 is a wasteful number, since it uses less digits than its factorization.

12666486 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 301595.

The product of its digits is 82944, while the sum is 39.

The square root of 12666486 is about 3559.0007024444. Note that the first 3 decimals coincide. The cubic root of 12666486 is about 233.1052469565.

The spelling of 12666486 in words is "twelve million, six hundred sixty-six thousand, four hundred eighty-six".