12743985 has 8 divisors (see below), whose sum is σ = 20390400. Its totient is φ = 6796784.

The previous prime is 12743977. The next prime is 12744019. The reversal of 12743985 is 58934721.

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 12743985 - 2³ = 12743977 is a prime.

It is a Curzon 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, 424785 + ... + 424814.

It is an arithmetic number, because the mean of its divisors is an integer number (2548800).

Almost surely, 2^12743985 is an apocalyptic number.

12743985 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

12743985 is a deficient number, since it is larger than the sum of its proper divisors (7646415).

12743985 is an equidigital number, since it uses as much as digits as its factorization.

12743985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 849607.

The product of its digits is 60480, while the sum is 39.

The square root of 12743985 is about 3569.8718464393. The cubic root of 12743985 is about 233.5796933093.

The spelling of 12743985 in words is "twelve million, seven hundred forty-three thousand, nine hundred eighty-five".