284550661 has 2 divisors, whose sum is σ = 284550662. Its totient is φ = 284550660.

The previous prime is 284550659. The next prime is 284550671. The reversal of 284550661 is 166055482.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 282038436 + 2512225 = 16794^2 + 1585^2 .

It is a cyclic number.

It is not a de Polignac number, because 284550661 - 2¹ = 284550659 is a prime.

Together with 284550659, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 284550661.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (284550671) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 142275330 + 142275331.

It is an arithmetic number, because the mean of its divisors is an integer number (142275331).

Almost surely, 2^284550661 is an apocalyptic number.

It is an amenable number.

284550661 is a deficient number, since it is larger than the sum of its proper divisors (1).

284550661 is an equidigital number, since it uses as much as digits as its factorization.

284550661 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 57600, while the sum is 37.

The square root of 284550661 is about 16868.6294938267. The cubic root of 284550661 is about 657.7384031400.

The spelling of 284550661 in words is "two hundred eighty-four million, five hundred fifty thousand, six hundred sixty-one".