285676 has 6 divisors (see below), whose sum is σ = 499940. Its totient is φ = 142836.

The previous prime is 285673. The next prime is 285697. The reversal of 285676 is 676582.

It is a super-2 number, since 2×285676² = 163221553952, which contains 22 as substring.

It is a d-powerful number, because it can be written as 2¹¹ + 8 + 6³ + 5⁵ + 7³ + 6⁷ .

It is not an unprimeable number, because it can be changed into a prime (285673) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35706 + ... + 35713.

2²⁸⁵⁶⁷⁶ is an apocalyptic number.

It is an amenable number.

285676 is a deficient number, since it is larger than the sum of its proper divisors (214264).

285676 is a wasteful number, since it uses less digits than its factorization.

285676 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71423 (or 71421 counting only the distinct ones).

The product of its digits is 20160, while the sum is 34.

The square root of 285676 is about 534.4866696186. The cubic root of 285676 is about 65.8604335720.

It can be divided in two parts, 285 and 676, that added together give a square (961 = 31²).

The spelling of 285676 in words is "two hundred eighty-five thousand, six hundred seventy-six".