65332020 has 144 divisors (see below), whose sum is σ = 210288960. Its totient is φ = 15095808.

The previous prime is 65332019. The next prime is 65332027. The reversal of 65332020 is 2023356.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65332027) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 172191 + ... + 172569.

It is an arithmetic number, because the mean of its divisors is an integer number (1460340).

Almost surely, 2^65332020 is an apocalyptic number.

65332020 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 65332020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (105144480).

65332020 is an abundant number, since it is smaller than the sum of its proper divisors (144956940).

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

65332020 is a wasteful number, since it uses less digits than its factorization.

65332020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 434 (or 419 counting only the distinct ones).

The product of its (nonzero) digits is 1080, while the sum is 21.

The square root of 65332020 is about 8082.8225268157. The cubic root of 65332020 is about 402.7560090899.

Adding to 65332020 its reverse (2023356), we get a palindrome (67355376).

The spelling of 65332020 in words is "sixty-five million, three hundred thirty-two thousand, twenty".