12065655 has 32 divisors (see below), whose sum is σ = 22238208. Its totient is φ = 5472000.

The previous prime is 12065633. The next prime is 12065681. The reversal of 12065655 is 55656021.

It is not a de Polignac number, because 12065655 - 2⁹ = 12065143 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 15475 + ... + 16235.

It is an arithmetic number, because the mean of its divisors is an integer number (694944).

Almost surely, 2^12065655 is an apocalyptic number.

12065655 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

12065655 is a deficient number, since it is larger than the sum of its proper divisors (10172553).

12065655 is a wasteful number, since it uses less digits than its factorization.

12065655 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 927.

The product of its (nonzero) digits is 9000, while the sum is 30.

The square root of 12065655 is about 3473.5651714053. The cubic root of 12065655 is about 229.3596238582.

It can be divided in two parts, 12065 and 655, that added together give a triangular number (12720 = T₁₅₉).

The spelling of 12065655 in words is "twelve million, sixty-five thousand, six hundred fifty-five".