65541280 has 96 divisors (see below), whose sum is σ = 178657920. Its totient is φ = 22256640.

The previous prime is 65541277. The next prime is 65541299. The reversal of 65541280 is 8214556.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 155470 + ... + 155890.

It is an arithmetic number, because the mean of its divisors is an integer number (1861020).

Almost surely, 2^65541280 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 65541280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (89328960).

65541280 is an abundant number, since it is smaller than the sum of its proper divisors (113116640).

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

65541280 is a wasteful number, since it uses less digits than its factorization.

65541280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 582 (or 574 counting only the distinct ones).

The product of its (nonzero) digits is 9600, while the sum is 31.

The square root of 65541280 is about 8095.7569133466. The cubic root of 65541280 is about 403.1855631221.

The spelling of 65541280 in words is "sixty-five million, five hundred forty-one thousand, two hundred eighty".