65489536 has 32 divisors (see below), whose sum is σ = 149107680. Its totient is φ = 28066560.

The previous prime is 65489531. The next prime is 65489603. The reversal of 65489536 is 63598456.

It is a tau number, because it is divible by the number of its divisors (32).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65489531) 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, 35650 + ... + 37441.

It is an arithmetic number, because the mean of its divisors is an integer number (4659615).

Almost surely, 2^65489536 is an apocalyptic number.

It is an amenable number.

65489536 is an abundant number, since it is smaller than the sum of its proper divisors (83618144).

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

65489536 is an equidigital number, since it uses as much as digits as its factorization.

65489536 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73112 (or 73100 counting only the distinct ones).

The product of its digits is 777600, while the sum is 46.

The square root of 65489536 is about 8092.5605342191. The cubic root of 65489536 is about 403.0794319104.

The spelling of 65489536 in words is "sixty-five million, four hundred eighty-nine thousand, five hundred thirty-six".