285214717 has 2 divisors, whose sum is σ = 285214718. Its totient is φ = 285214716.

The previous prime is 285214649. The next prime is 285214733. The reversal of 285214717 is 717412582.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 282609721 + 2604996 = 16811^2 + 1614^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-285214717 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (285214747) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 142607358 + 142607359.

It is an arithmetic number, because the mean of its divisors is an integer number (142607359).

Almost surely, 2^285214717 is an apocalyptic number.

It is an amenable number.

285214717 is a deficient number, since it is larger than the sum of its proper divisors (1).

285214717 is an equidigital number, since it uses as much as digits as its factorization.

285214717 is an evil number, because the sum of its binary digits is even.

The product of its digits is 31360, while the sum is 37.

The square root of 285214717 is about 16888.3011875085. The cubic root of 285214717 is about 658.2496604370.

The spelling of 285214717 in words is "two hundred eighty-five million, two hundred fourteen thousand, seven hundred seventeen".