285685711 has 2 divisors, whose sum is σ = 285685712. Its totient is φ = 285685710.

The previous prime is 285685667. The next prime is 285685721. The reversal of 285685711 is 117586582.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 285685711 - 2¹³ = 285677519 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (285685721) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 142842855 + 142842856.

It is an arithmetic number, because the mean of its divisors is an integer number (142842856).

Almost surely, 2^285685711 is an apocalyptic number.

285685711 is a deficient number, since it is larger than the sum of its proper divisors (1).

285685711 is an equidigital number, since it uses as much as digits as its factorization.

285685711 is an evil number, because the sum of its binary digits is even.

The product of its digits is 134400, while the sum is 43.

The square root of 285685711 is about 16902.2398219881. The cubic root of 285685711 is about 658.6117982930.

The spelling of 285685711 in words is "two hundred eighty-five million, six hundred eighty-five thousand, seven hundred eleven".