65020 has 12 divisors (see below), whose sum is σ = 136584. Its totient is φ = 26000.

The previous prime is 65011. The next prime is 65027. The reversal of 65020 is 2056.

65020 = T₁₀₉ + T₁₁₀ + ... + T₁₁₈.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65027) by changing a digit.

65020 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 (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1606 + ... + 1645.

It is an arithmetic number, because the mean of its divisors is an integer number (11382).

2⁶⁵⁰²⁰ is an apocalyptic number.

It is an amenable number.

65020 is an abundant number, since it is smaller than the sum of its proper divisors (71564).

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

It is a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (68292).

65020 is a wasteful number, since it uses less digits than its factorization.

65020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3260 (or 3258 counting only the distinct ones).

The product of its (nonzero) digits is 60, while the sum is 13.

The square root of 65020 is about 254.9901958900. The cubic root of 65020 is about 40.2113809843.

Adding to 65020 its reverse (2056), we get a palindrome (67076).

The spelling of 65020 in words is "sixty-five thousand, twenty".