660055267 has 4 divisors (see below), whose sum is σ = 662438416. Its totient is φ = 657672120.

The previous prime is 660055237. The next prime is 660055271. The reversal of 660055267 is 762550066.

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

It is a cyclic number.

It is not a de Polignac number, because 660055267 - 2⁷ = 660055139 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (660055217) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1191159 + ... + 1191712.

It is an arithmetic number, because the mean of its divisors is an integer number (165609604).

Almost surely, 2^660055267 is an apocalyptic number.

660055267 is a deficient number, since it is larger than the sum of its proper divisors (2383149).

660055267 is a wasteful number, since it uses less digits than its factorization.

660055267 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2383148.

The product of its (nonzero) digits is 75600, while the sum is 37.

The square root of 660055267 is about 25691.5407673421. The cubic root of 660055267 is about 870.6830708119.

The spelling of 660055267 in words is "six hundred sixty million, fifty-five thousand, two hundred sixty-seven".