660456023 has 8 divisors (see below), whose sum is σ = 682277376. Its totient is φ = 638667000.

The previous prime is 660456011. The next prime is 660456047. The reversal of 660456023 is 320654066.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 660456023 - 2⁸ = 660455767 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (660456053) 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 7 ways as a sum of consecutive naturals, for example, 37640 + ... + 52322.

It is an arithmetic number, because the mean of its divisors is an integer number (85284672).

Almost surely, 2^660456023 is an apocalyptic number.

660456023 is a deficient number, since it is larger than the sum of its proper divisors (21821353).

660456023 is a wasteful number, since it uses less digits than its factorization.

660456023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16165.

The product of its (nonzero) digits is 25920, while the sum is 32.

The square root of 660456023 is about 25699.3389603702. The cubic root of 660456023 is about 870.8592484177.

The spelling of 660456023 in words is "six hundred sixty million, four hundred fifty-six thousand, twenty-three".