12661335 has 12 divisors (see below), whose sum is σ = 21946392. Its totient is φ = 6752688.

The previous prime is 12661321. The next prime is 12661357. The reversal of 12661335 is 53316621.

12661335 is a `hidden beast` number, since 12 + 6 + 613 + 35 = 666.

12661335 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 12661335 - 2⁵ = 12661303 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12661299 and 12661308.

It is a congruent 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 11 ways as a sum of consecutive naturals, for example, 140637 + ... + 140726.

It is an arithmetic number, because the mean of its divisors is an integer number (1828866).

Almost surely, 2^12661335 is an apocalyptic number.

12661335 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

12661335 is a deficient number, since it is larger than the sum of its proper divisors (9285057).

12661335 is a wasteful number, since it uses less digits than its factorization.

12661335 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 281374 (or 281371 counting only the distinct ones).

The product of its digits is 3240, while the sum is 27.

The square root of 12661335 is about 3558.2769706699. The cubic root of 12661335 is about 233.0736441919.

Adding to 12661335 its reverse (53316621), we get a palindrome (65977956).

It can be divided in two parts, 12661 and 335, that added together give a square (12996 = 114²).

The spelling of 12661335 in words is "twelve million, six hundred sixty-one thousand, three hundred thirty-five".