12870705 has 16 divisors (see below), whose sum is σ = 20744640. Its totient is φ = 6813888.

The previous prime is 12870701. The next prime is 12870721. The reversal of 12870705 is 50707821.

It is a happy number.

It is not a de Polignac number, because 12870705 - 2² = 12870701 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12870701) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1002 + ... + 5171.

It is an arithmetic number, because the mean of its divisors is an integer number (1296540).

Almost surely, 2^12870705 is an apocalyptic number.

12870705 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

12870705 is a deficient number, since it is larger than the sum of its proper divisors (7873935).

12870705 is a wasteful number, since it uses less digits than its factorization.

12870705 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6320.

The product of its (nonzero) digits is 3920, while the sum is 30.

The square root of 12870705 is about 3587.5764800210. The cubic root of 12870705 is about 234.3513423232.

The spelling of 12870705 in words is "twelve million, eight hundred seventy thousand, seven hundred five".