285424661 has 2 divisors, whose sum is σ = 285424662. Its totient is φ = 285424660.

The previous prime is 285424651. The next prime is 285424681. The reversal of 285424661 is 166424582.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 281400625 + 4024036 = 16775^2 + 2006^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-285424661 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (285424621) 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, 142712330 + 142712331.

It is an arithmetic number, because the mean of its divisors is an integer number (142712331).

Almost surely, 2^285424661 is an apocalyptic number.

It is an amenable number.

285424661 is a deficient number, since it is larger than the sum of its proper divisors (1).

285424661 is an equidigital number, since it uses as much as digits as its factorization.

285424661 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 92160, while the sum is 38.

The square root of 285424661 is about 16894.5157077674. The cubic root of 285424661 is about 658.4111313852.

The spelling of 285424661 in words is "two hundred eighty-five million, four hundred twenty-four thousand, six hundred sixty-one".