285695233 has 2 divisors, whose sum is σ = 285695234. Its totient is φ = 285695232.

The previous prime is 285695219. The next prime is 285695237. The reversal of 285695233 is 332596582.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 285508609 + 186624 = 16897^2 + 432^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-285695233 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 285695233.

It is not a weakly prime, because it can be changed into another prime (285695237) 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, 142847616 + 142847617.

It is an arithmetic number, because the mean of its divisors is an integer number (142847617).

Almost surely, 2^285695233 is an apocalyptic number.

It is an amenable number.

285695233 is a deficient number, since it is larger than the sum of its proper divisors (1).

285695233 is an equidigital number, since it uses as much as digits as its factorization.

285695233 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 388800, while the sum is 43.

The square root of 285695233 is about 16902.5214982854. The cubic root of 285695233 is about 658.6191154620.

It can be divided in two parts, 2856 and 95233, that added together give a palindrome (98089).

The spelling of 285695233 in words is "two hundred eighty-five million, six hundred ninety-five thousand, two hundred thirty-three".