285687341 has 2 divisors, whose sum is σ = 285687342. Its totient is φ = 285687340.

The previous prime is 285687299. The next prime is 285687371. The reversal of 285687341 is 143786582.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 274863241 + 10824100 = 16579^2 + 3290^2 .

It is a cyclic number.

It is not a de Polignac number, because 285687341 - 2⁶ = 285687277 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 285687292 and 285687301.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (285687371) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 142843670 + 142843671.

It is an arithmetic number, because the mean of its divisors is an integer number (142843671).

Almost surely, 2^285687341 is an apocalyptic number.

It is an amenable number.

285687341 is a deficient number, since it is larger than the sum of its proper divisors (1).

285687341 is an equidigital number, since it uses as much as digits as its factorization.

285687341 is an evil number, because the sum of its binary digits is even.

The product of its digits is 322560, while the sum is 44.

The square root of 285687341 is about 16902.2880403808. The cubic root of 285687341 is about 658.6130508760.

The spelling of 285687341 in words is "two hundred eighty-five million, six hundred eighty-seven thousand, three hundred forty-one".