12653985 has 16 divisors (see below), whose sum is σ = 20297664. Its totient is φ = 6731712.

The previous prime is 12653957. The next prime is 12653999. The reversal of 12653985 is 58935621.

It is not a de Polignac number, because 12653985 - 2¹⁹ = 12129697 is a prime.

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, 7039 + ... + 8651.

It is an arithmetic number, because the mean of its divisors is an integer number (1268604).

Almost surely, 2^12653985 is an apocalyptic number.

12653985 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

12653985 is a deficient number, since it is larger than the sum of its proper divisors (7643679).

12653985 is a wasteful number, since it uses less digits than its factorization.

12653985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2144.

The product of its digits is 64800, while the sum is 39.

The square root of 12653985 is about 3557.2440174944. The cubic root of 12653985 is about 233.0285351287.

The spelling of 12653985 in words is "twelve million, six hundred fifty-three thousand, nine hundred eighty-five".