12261685 has 4 divisors (see below), whose sum is σ = 14714028. Its totient is φ = 9809344.

The previous prime is 12261677. The next prime is 12261701. The reversal of 12261685 is 58616221.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 9296401 + 2965284 = 3049^2 + 1722^2 .

It is a cyclic number.

It is not a de Polignac number, because 12261685 - 2³ = 12261677 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1226164 + ... + 1226173.

It is an arithmetic number, because the mean of its divisors is an integer number (3678507).

Almost surely, 2^12261685 is an apocalyptic number.

It is an amenable number.

12261685 is a deficient number, since it is larger than the sum of its proper divisors (2452343).

12261685 is an equidigital number, since it uses as much as digits as its factorization.

12261685 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2452342.

The product of its digits is 5760, while the sum is 31.

The square root of 12261685 is about 3501.6688878305. The cubic root of 12261685 is about 230.5950878380.

The spelling of 12261685 in words is "twelve million, two hundred sixty-one thousand, six hundred eighty-five".