12887705 has 8 divisors (see below), whose sum is σ = 16137792. Its totient is φ = 9861808.

The previous prime is 12887657. The next prime is 12887713. The reversal of 12887705 is 50778821.

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

It is a cyclic number.

It is not a de Polignac number, because 12887705 - 2⁸ = 12887449 is a prime.

It is a Duffinian 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, 55919 + ... + 56148.

It is an arithmetic number, because the mean of its divisors is an integer number (2017224).

Almost surely, 2^12887705 is an apocalyptic number.

It is an amenable number.

12887705 is a deficient number, since it is larger than the sum of its proper divisors (3250087).

12887705 is a wasteful number, since it uses less digits than its factorization.

12887705 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 112095.

The product of its (nonzero) digits is 31360, while the sum is 38.

The square root of 12887705 is about 3589.9449856509. The cubic root of 12887705 is about 234.4544762763.

The spelling of 12887705 in words is "twelve million, eight hundred eighty-seven thousand, seven hundred five".