658020 has 48 divisors (see below), whose sum is σ = 2011968. Its totient is φ = 159360.

The previous prime is 658001. The next prime is 658043. The reversal of 658020 is 20856.

It is a happy number.

It is an unprimeable number.

658020 is an untouchable number, because it is not equal to the sum of proper divisors of any 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 15 ways as a sum of consecutive naturals, for example, 162 + ... + 1158.

It is an arithmetic number, because the mean of its divisors is an integer number (41916).

2⁶⁵⁸⁰²⁰ is an apocalyptic number.

658020 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 658020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1005984).

658020 is an abundant number, since it is smaller than the sum of its proper divisors (1353948).

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

658020 is a wasteful number, since it uses less digits than its factorization.

658020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1020 (or 1018 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 21.

The square root of 658020 is about 811.1843193751. The cubic root of 658020 is about 86.9787238235.

Adding to 658020 its reverse (20856), we get a palindrome (678876).

The spelling of 658020 in words is "six hundred fifty-eight thousand, twenty".