660753 has 6 divisors (see below), whose sum is σ = 954434. Its totient is φ = 440496.

The previous prime is 660733. The next prime is 660757. The reversal of 660753 is 357066.

660753 is a `hidden beast` number, since 6 + 607 + 53 = 666.

It can be written as a sum of positive squares in only one way, i.e., 627264 + 33489 = 792^2 + 183^2 .

It is not a de Polignac number, because 660753 - 2⁹ = 660241 is a prime.

It is a super-3 number, since 3×660753³ = 865443430514333331, which contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (660757) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 36700 + ... + 36717.

2⁶⁶⁰⁷⁵³ is an apocalyptic number.

It is an amenable number.

660753 is a deficient number, since it is larger than the sum of its proper divisors (293681).

660753 is a wasteful number, since it uses less digits than its factorization.

660753 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73423 (or 73420 counting only the distinct ones).

The product of its (nonzero) digits is 3780, while the sum is 27.

The square root of 660753 is about 812.8671478169. The cubic root of 660753 is about 87.0989757442.

The spelling of 660753 in words is "six hundred sixty thousand, seven hundred fifty-three".