65539072 has 44 divisors (see below), whose sum is σ = 135593280. Its totient is φ = 31625216.

The previous prime is 65539069. The next prime is 65539073. The reversal of 65539072 is 27093556.

It is not an unprimeable number, because it can be changed into a prime (65539073) 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, 28593 + ... + 30799.

Almost surely, 2^65539072 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 65539072, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (67796640).

65539072 is an abundant number, since it is smaller than the sum of its proper divisors (70054208).

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

65539072 is a wasteful number, since it uses less digits than its factorization.

65539072 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2256 (or 2238 counting only the distinct ones).

The product of its (nonzero) digits is 56700, while the sum is 37.

The square root of 65539072 is about 8095.6205444672. The cubic root of 65539072 is about 403.1810354732.

It can be divided in two parts, 6553 and 9072, that added together give a 6-th power (15625 = 5⁶).

The spelling of 65539072 in words is "sixty-five million, five hundred thirty-nine thousand, seventy-two".