285868513 has 8 divisors (see below), whose sum is σ = 327381632. Its totient is φ = 244524096.

The previous prime is 285868493. The next prime is 285868543. The reversal of 285868513 is 315868582.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 285868513 - 2²⁵ = 252314081 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (285868543) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 38520 + ... + 45337.

It is an arithmetic number, because the mean of its divisors is an integer number (40922704).

Almost surely, 2^285868513 is an apocalyptic number.

It is an amenable number.

285868513 is a deficient number, since it is larger than the sum of its proper divisors (41513119).

285868513 is an equidigital number, since it uses as much as digits as its factorization.

285868513 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84351.

The product of its digits is 460800, while the sum is 46.

The square root of 285868513 is about 16907.6465837206. The cubic root of 285868513 is about 658.7522438704.

The spelling of 285868513 in words is "two hundred eighty-five million, eight hundred sixty-eight thousand, five hundred thirteen".