64585 has 4 divisors (see below), whose sum is σ = 77508. Its totient is φ = 51664.

The previous prime is 64579. The next prime is 64591. The reversal of 64585 is 58546.

64585 = T₂₀₆ + T₂₀₇ + T₂₀₈.

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

It is an interprime number because it is at equal distance from previous prime (64579) and next prime (64591).

It can be written as a sum of positive squares in 2 ways, for example, as 29241 + 35344 = 171^2 + 188^2 .

It is a cyclic number.

It is not a de Polignac number, because 64585 - 2³ = 64577 is a prime.

It is a Duffinian number.

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, 6454 + ... + 6463.

It is an arithmetic number, because the mean of its divisors is an integer number (19377).

2⁶⁴⁵⁸⁵ is an apocalyptic number.

64585 is the 208-th centered triangular number.

It is an amenable number.

64585 is a deficient number, since it is larger than the sum of its proper divisors (12923).

64585 is a wasteful number, since it uses less digits than its factorization.

64585 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12922.

The product of its digits is 4800, while the sum is 28.

The square root of 64585 is about 254.1357904743. The cubic root of 64585 is about 40.1215055364.

The spelling of 64585 in words is "sixty-four thousand, five hundred eighty-five".