64535560 has 32 divisors (see below), whose sum is σ = 147591000. Its totient is φ = 25390080.

The previous prime is 64535509. The next prime is 64535563. The reversal of 64535560 is 6553546.

It can be written as a sum of positive squares in 4 ways, for example, as 19027044 + 45508516 = 4362^2 + 6746^2 .

It is not an unprimeable number, because it can be changed into a prime (64535563) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10785 + ... + 15664.

Almost surely, 2^64535560 is an apocalyptic number.

It is an amenable number.

64535560 is an abundant number, since it is smaller than the sum of its proper divisors (83055440).

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

64535560 is a wasteful number, since it uses less digits than its factorization.

64535560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26521 (or 26517 counting only the distinct ones).

The product of its (nonzero) digits is 54000, while the sum is 34.

The square root of 64535560 is about 8033.4027659517. The cubic root of 64535560 is about 401.1126521433.

The spelling of 64535560 in words is "sixty-four million, five hundred thirty-five thousand, five hundred sixty".