285268769 has 2 divisors, whose sum is σ = 285268770. Its totient is φ = 285268768.

The previous prime is 285268729. The next prime is 285268783. The reversal of 285268769 is 967862582.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 150430225 + 134838544 = 12265^2 + 11612^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-285268769 is a prime.

It is a super-2 number, since 2×285268769² = 162756541133550722, which contains 22 as substring.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 285268769.

It is not a weakly prime, because it can be changed into another prime (285268729) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 142634384 + 142634385.

It is an arithmetic number, because the mean of its divisors is an integer number (142634385).

Almost surely, 2^285268769 is an apocalyptic number.

It is an amenable number.

285268769 is a deficient number, since it is larger than the sum of its proper divisors (1).

285268769 is an equidigital number, since it uses as much as digits as its factorization.

285268769 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2903040, while the sum is 53.

The square root of 285268769 is about 16889.9013910680. The cubic root of 285268769 is about 658.2912401793.

The spelling of 285268769 in words is "two hundred eighty-five million, two hundred sixty-eight thousand, seven hundred sixty-nine".