660783 has 8 divisors (see below), whose sum is σ = 905008. Its totient is φ = 428544.

The previous prime is 660769. The next prime is 660787. The reversal of 660783 is 387066.

660783 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 660783 - 2⁶ = 660719 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 660783.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (660787) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2866 + ... + 3087.

It is an arithmetic number, because the mean of its divisors is an integer number (113126).

2⁶⁶⁰⁷⁸³ is an apocalyptic number.

660783 is a deficient number, since it is larger than the sum of its proper divisors (244225).

660783 is a wasteful number, since it uses less digits than its factorization.

660783 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5993.

The product of its (nonzero) digits is 6048, while the sum is 30.

The square root of 660783 is about 812.8856008074. The cubic root of 660783 is about 87.1002939017.

The spelling of 660783 in words is "six hundred sixty thousand, seven hundred eighty-three".