660741 has 8 divisors (see below), whose sum is σ = 896160. Its totient is φ = 432912.

The previous prime is 660733. The next prime is 660757. The reversal of 660741 is 147066.

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

It is not a de Polignac number, because 660741 - 2³ = 660733 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (660731) 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 7 ways as a sum of consecutive naturals, for example, 1690 + ... + 2043.

It is an arithmetic number, because the mean of its divisors is an integer number (112020).

2⁶⁶⁰⁷⁴¹ is an apocalyptic number.

It is an amenable number.

660741 is a deficient number, since it is larger than the sum of its proper divisors (235419).

660741 is a wasteful number, since it uses less digits than its factorization.

660741 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3795.

The product of its (nonzero) digits is 1008, while the sum is 24.

The square root of 660741 is about 812.8597665034. The cubic root of 660741 is about 87.0984484700.

The spelling of 660741 in words is "six hundred sixty thousand, seven hundred forty-one".