285664927 has 2 divisors, whose sum is σ = 285664928. Its totient is φ = 285664926.

The previous prime is 285664921. The next prime is 285664937. The reversal of 285664927 is 729466582.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 285664927 - 2¹⁵ = 285632159 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (285664921) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 142832463 + 142832464.

It is an arithmetic number, because the mean of its divisors is an integer number (142832464).

Almost surely, 2^285664927 is an apocalyptic number.

285664927 is a deficient number, since it is larger than the sum of its proper divisors (1).

285664927 is an equidigital number, since it uses as much as digits as its factorization.

285664927 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1451520, while the sum is 49.

The square root of 285664927 is about 16901.6249810484. The cubic root of 285664927 is about 658.5958262895.

The spelling of 285664927 in words is "two hundred eighty-five million, six hundred sixty-four thousand, nine hundred twenty-seven".