66485 has 4 divisors (see below), whose sum is σ = 79788. Its totient is φ = 53184.

The previous prime is 66467. The next prime is 66491. The reversal of 66485 is 58466.

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 7921 + 58564 = 89^2 + 242^2 .

It is a cyclic number.

It is not a de Polignac number, because 66485 - 2¹⁴ = 50101 is a prime.

It is a d-powerful number, because it can be written as 6³ + 6³ + 4⁸ + 8³ + 5 .

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 66485.

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, 6644 + ... + 6653.

It is an arithmetic number, because the mean of its divisors is an integer number (19947).

2⁶⁶⁴⁸⁵ is an apocalyptic number.

It is an amenable number.

66485 is a deficient number, since it is larger than the sum of its proper divisors (13303).

66485 is a wasteful number, since it uses less digits than its factorization.

66485 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13302.

The product of its digits is 5760, while the sum is 29.

The square root of 66485 is about 257.8468537718. The cubic root of 66485 is about 40.5111486861.

The spelling of 66485 in words is "sixty-six thousand, four hundred eighty-five".