65045 has 4 divisors (see below), whose sum is σ = 78060. Its totient is φ = 52032.

The previous prime is 65033. The next prime is 65053. The reversal of 65045 is 54056.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 17956 + 47089 = 134^2 + 217^2 .

It is a cyclic number.

It is not a de Polignac number, because 65045 - 2⁴ = 65029 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6500 + ... + 6509.

It is an arithmetic number, because the mean of its divisors is an integer number (19515).

2⁶⁵⁰⁴⁵ is an apocalyptic number.

It is an amenable number.

65045 is a deficient number, since it is larger than the sum of its proper divisors (13015).

65045 is a wasteful number, since it uses less digits than its factorization.

65045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13014.

The product of its (nonzero) digits is 600, while the sum is 20.

The square root of 65045 is about 255.0392126713. The cubic root of 65045 is about 40.2165340434.

Subtracting from 65045 its sum of digits (20), we obtain a square (65025 = 255²).

The spelling of 65045 in words is "sixty-five thousand, forty-five".