660592 has 40 divisors (see below), whose sum is σ = 1406160. Its totient is φ = 299520.

The previous prime is 660589. The next prime is 660593. The reversal of 660592 is 295066.

It is a self number, because there is not a number n which added to its sum of digits gives 660592.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (660593) 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, 12438 + ... + 12490.

It is an arithmetic number, because the mean of its divisors is an integer number (35154).

2⁶⁶⁰⁵⁹² 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 660592, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (703080).

660592 is an abundant number, since it is smaller than the sum of its proper divisors (745568).

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

660592 is a wasteful number, since it uses less digits than its factorization.

660592 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 121 (or 115 counting only the distinct ones).

The product of its (nonzero) digits is 3240, while the sum is 28.

The square root of 660592 is about 812.7681096106. The cubic root of 660592 is about 87.0919009501.

The spelling of 660592 in words is "six hundred sixty thousand, five hundred ninety-two".