65528900 has 18 divisors (see below), whose sum is σ = 142197930. Its totient is φ = 26211520.

The previous prime is 65528867. The next prime is 65528917. The reversal of 65528900 is 982556.

It can be written as a sum of positive squares in 3 ways, for example, as 4813636 + 60715264 = 2194^2 + 7792^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 327545 + ... + 327744.

It is an arithmetic number, because the mean of its divisors is an integer number (7899885).

Almost surely, 2^65528900 is an apocalyptic number.

It is an amenable number.

65528900 is an abundant number, since it is smaller than the sum of its proper divisors (76669030).

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

65528900 is a wasteful number, since it uses less digits than its factorization.

65528900 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 655303 (or 655296 counting only the distinct ones).

The product of its (nonzero) digits is 21600, while the sum is 35.

The square root of 65528900 is about 8094.9922791810. The cubic root of 65528900 is about 403.1601758060.

The spelling of 65528900 in words is "sixty-five million, five hundred twenty-eight thousand, nine hundred".