523680660 has 192 divisors, whose sum is σ = 1756339200. Its totient is φ = 129112704.

The previous prime is 523680623. The next prime is 523680667. The reversal of 523680660 is 66086325.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (523680667) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 440587 + ... + 441773.

It is an arithmetic number, because the mean of its divisors is an integer number (9147600).

Almost surely, 2^523680660 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 523680660, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (878169600).

523680660 is an abundant number, since it is smaller than the sum of its proper divisors (1232658540).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

523680660 is a wasteful number, since it uses less digits than its factorization.

523680660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1267 (or 1259 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 36.

The square root of 523680660 is about 22884.0700051368. The cubic root of 523680660 is about 806.0379907672.

The spelling of 523680660 in words is "five hundred twenty-three million, six hundred eighty thousand, six hundred sixty".