659580 has 24 divisors (see below), whose sum is σ = 1846992. Its totient is φ = 175872.

The previous prime is 659569. The next prime is 659591. The reversal of 659580 is 85956.

It is an interprime number because it is at equal distance from previous prime (659569) and next prime (659591).

It is a congruent number.

It is an unprimeable number.

659580 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5437 + ... + 5556.

It is an arithmetic number, because the mean of its divisors is an integer number (76958).

2⁶⁵⁹⁵⁸⁰ is an apocalyptic number.

659580 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

659580 is an abundant number, since it is smaller than the sum of its proper divisors (1187412).

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

659580 is a wasteful number, since it uses less digits than its factorization.

659580 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11005 (or 11003 counting only the distinct ones).

The product of its (nonzero) digits is 10800, while the sum is 33.

The square root of 659580 is about 812.1453071957. The cubic root of 659580 is about 87.0474044734.

The spelling of 659580 in words is "six hundred fifty-nine thousand, five hundred eighty".