666112065 has 32 divisors (see below), whose sum is σ = 1090575360. Its totient is φ = 347070144.

The previous prime is 666112063. The next prime is 666112067. The reversal of 666112065 is 560211666.

It is an interprime number because it is at equal distance from previous prime (666112063) and next prime (666112067).

It is not a de Polignac number, because 666112065 - 2¹ = 666112063 is a prime.

It is not an unprimeable number, because it can be changed into a prime (666112063) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 145542 + ... + 150048.

It is an arithmetic number, because the mean of its divisors is an integer number (34080480).

Almost surely, 2^666112065 is an apocalyptic number.

It is an amenable number.

666112065 is a deficient number, since it is larger than the sum of its proper divisors (424463295).

666112065 is a wasteful number, since it uses less digits than its factorization.

666112065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4741.

The product of its (nonzero) digits is 12960, while the sum is 33.

The square root of 666112065 is about 25809.1469250729. The cubic root of 666112065 is about 873.3381529398.

The spelling of 666112065 in words is "six hundred sixty-six million, one hundred twelve thousand, sixty-five".