65004 has 12 divisors (see below), whose sum is σ = 151704.
Its totient is φ = 21664.
The previous prime is 65003. The next prime is 65011. The reversal of 65004 is 40056.
It is a tau number, because it is divible by the number of its divisors (12).
It is not an unprimeable number, because it can be changed into a prime (65003) 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, 2697 + ... + 2720.
It is an arithmetic number, because the mean of its divisors is an integer number (12642).
265004 is an apocalyptic number.
It is an amenable number.
65004 is an abundant number, since it is smaller than the sum of its proper divisors (86700).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
It is a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (75852).
65004 is a wasteful number, since it uses less digits than its factorization.
65004 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 5424 (or 5422 counting only the distinct ones).
The product of its (nonzero) digits is 120, while the sum is 15.
The square root of 65004 is about 254.9588202044.
The cubic root of 65004 is about 40.2080823332.
The spelling of 65004 in words is "sixty-five thousand, four".