284747 has 2 divisors, whose sum is σ = 284748. Its totient is φ = 284746.

The previous prime is 284743. The next prime is 284749. The reversal of 284747 is 747482.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 284747 - 2² = 284743 is a prime.

Together with 284749, it forms a pair of twin primes.

It is a Chen prime.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 284747.

It is not a weakly prime, because it can be changed into another prime (284741) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 142373 + 142374.

It is an arithmetic number, because the mean of its divisors is an integer number (142374).

2²⁸⁴⁷⁴⁷ is an apocalyptic number.

284747 is a deficient number, since it is larger than the sum of its proper divisors (1).

284747 is an equidigital number, since it uses as much as digits as its factorization.

284747 is an evil number, because the sum of its binary digits is even.

The product of its digits is 12544, while the sum is 32.

The square root of 284747 is about 533.6169037802. The cubic root of 284747 is about 65.7889647455.

The spelling of 284747 in words is "two hundred eighty-four thousand, seven hundred forty-seven".