285714287 has 2 divisors, whose sum is σ = 285714288. Its totient is φ = 285714286.

The previous prime is 285714283. The next prime is 285714307. The reversal of 285714287 is 782417582.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 285714287 - 2² = 285714283 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (285714283) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 142857143 + 142857144.

It is an arithmetic number, because the mean of its divisors is an integer number (142857144).

Almost surely, 2^285714287 is an apocalyptic number.

285714287 is a deficient number, since it is larger than the sum of its proper divisors (1).

285714287 is an equidigital number, since it uses as much as digits as its factorization.

285714287 is an evil number, because the sum of its binary digits is even.

The product of its digits is 250880, while the sum is 44.

The square root of 285714287 is about 16903.0851326023. The cubic root of 285714287 is about 658.6337569963.

It can be divided in two parts, 285714 and 287, that multiplied together give a palindrome (81999918).

The spelling of 285714287 in words is "two hundred eighty-five million, seven hundred fourteen thousand, two hundred eighty-seven".