12587705 has 16 divisors (see below), whose sum is σ = 16794624. Its totient is φ = 8994240.

The previous prime is 12587699. The next prime is 12587713. The reversal of 12587705 is 50778521.

It is not a de Polignac number, because 12587705 - 2⁴ = 12587689 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1109 + ... + 5138.

It is an arithmetic number, because the mean of its divisors is an integer number (1049664).

Almost surely, 2^12587705 is an apocalyptic number.

It is an amenable number.

12587705 is a deficient number, since it is larger than the sum of its proper divisors (4206919).

12587705 is a wasteful number, since it uses less digits than its factorization.

12587705 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6296.

The product of its (nonzero) digits is 19600, while the sum is 35.

The square root of 12587705 is about 3547.9155852416. The cubic root of 12587705 is about 232.6209645330.

The spelling of 12587705 in words is "twelve million, five hundred eighty-seven thousand, seven hundred five".