12611985 has 16 divisors (see below), whose sum is σ = 20227200. Its totient is φ = 6710400.

The previous prime is 12611957. The next prime is 12611987. The reversal of 12611985 is 58911621.

It is not a de Polignac number, because 12611985 - 2¹⁴ = 12595601 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12611987) 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, 8316 + ... + 9714.

It is an arithmetic number, because the mean of its divisors is an integer number (1264200).

Almost surely, 2^12611985 is an apocalyptic number.

12611985 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

12611985 is a deficient number, since it is larger than the sum of its proper divisors (7615215).

12611985 is a wasteful number, since it uses less digits than its factorization.

12611985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2008.

The product of its digits is 4320, while the sum is 33.

The square root of 12611985 is about 3551.3356642255. The cubic root of 12611985 is about 232.7704333856.

The spelling of 12611985 in words is "twelve million, six hundred eleven thousand, nine hundred eighty-five".