285064 has 16 divisors (see below), whose sum is σ = 575820. Its totient is φ = 131520.

The previous prime is 285049. The next prime is 285071. The reversal of 285064 is 460582.

It can be written as a sum of positive squares in 2 ways, for example, as 260100 + 24964 = 510^2 + 158^2 .

It is a super-2 number, since 2×285064² = 162522968192, which contains 22 as substring.

It is an unprimeable number.

285064 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1267 + ... + 1474.

2²⁸⁵⁰⁶⁴ is an apocalyptic number.

It is an amenable number.

285064 is an abundant number, since it is smaller than the sum of its proper divisors (290756).

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

285064 is a wasteful number, since it uses less digits than its factorization.

285064 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2760 (or 2756 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 25.

The square root of 285064 is about 533.9138507287. The cubic root of 285064 is about 65.8133692959.

The spelling of 285064 in words is "two hundred eighty-five thousand, sixty-four".