65532020 has 12 divisors (see below), whose sum is σ = 137617284. Its totient is φ = 26212800.

The previous prime is 65532017. The next prime is 65532023. The reversal of 65532020 is 2023556.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (65532017) and next prime (65532023).

It can be written as a sum of positive squares in 2 ways, for example, as 35545444 + 29986576 = 5962^2 + 5476^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65532023) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1638281 + ... + 1638320.

It is an arithmetic number, because the mean of its divisors is an integer number (11468107).

Almost surely, 2^65532020 is an apocalyptic number.

It is an amenable number.

65532020 is an abundant number, since it is smaller than the sum of its proper divisors (72085264).

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

65532020 is a wasteful number, since it uses less digits than its factorization.

65532020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3276610 (or 3276608 counting only the distinct ones).

The product of its (nonzero) digits is 1800, while the sum is 23.

The square root of 65532020 is about 8095.1849886213. The cubic root of 65532020 is about 403.1665742032.

Adding to 65532020 its reverse (2023556), we get a palindrome (67555576).

The spelling of 65532020 in words is "sixty-five million, five hundred thirty-two thousand, twenty".