659620 has 48 divisors (see below), whose sum is σ = 1552320. Its totient is φ = 233856.

The previous prime is 659611. The next prime is 659621. The reversal of 659620 is 26956.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (659621) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11151 + ... + 11209.

It is an arithmetic number, because the mean of its divisors is an integer number (32340).

2⁶⁵⁹⁶²⁰ 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 659620, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (776160).

659620 is an abundant number, since it is smaller than the sum of its proper divisors (892700).

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

659620 is a wasteful number, since it uses less digits than its factorization.

659620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 124 (or 122 counting only the distinct ones).

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

The square root of 659620 is about 812.1699329574. The cubic root of 659620 is about 87.0491640911.

The spelling of 659620 in words is "six hundred fifty-nine thousand, six hundred twenty".