660632 has 32 divisors (see below), whose sum is σ = 1451520. Its totient is φ = 276000.

The previous prime is 660619. The next prime is 660643. The reversal of 660632 is 236066.

It is a junction number, because it is equal to n+sod(n) for n = 660598 and 660607.

It is a congruent number.

It is an unprimeable number.

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, 2507 + ... + 2757.

It is an arithmetic number, because the mean of its divisors is an integer number (45360).

2⁶⁶⁰⁶³² 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 660632, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (725760).

660632 is an abundant number, since it is smaller than the sum of its proper divisors (790888).

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

660632 is a wasteful number, since it uses less digits than its factorization.

660632 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 311 (or 307 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 23.

The square root of 660632 is about 812.7927165028. The cubic root of 660632 is about 87.0936587702.

Adding to 660632 its reverse (236066), we get a palindrome (896698).

The spelling of 660632 in words is "six hundred sixty thousand, six hundred thirty-two".