284260561 has 16 divisors (see below), whose sum is σ = 311446800. Its totient is φ = 257875200.

The previous prime is 284260547. The next prime is 284260597. The reversal of 284260561 is 165062482.

It can be written as a sum of positive squares in 8 ways, for example, as 10523536 + 273737025 = 3244^2 + 16545^2 .

It is a cyclic number.

It is not a de Polignac number, because 284260561 - 2¹⁵ = 284227793 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (284260541) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 194911 + ... + 196363.

It is an arithmetic number, because the mean of its divisors is an integer number (19465425).

Almost surely, 2^284260561 is an apocalyptic number.

It is an amenable number.

284260561 is a deficient number, since it is larger than the sum of its proper divisors (27186239).

284260561 is a wasteful number, since it uses less digits than its factorization.

284260561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1716.

The product of its (nonzero) digits is 23040, while the sum is 34.

The square root of 284260561 is about 16860.0284993828. The cubic root of 284260561 is about 657.5148052394.

The spelling of 284260561 in words is "two hundred eighty-four million, two hundred sixty thousand, five hundred sixty-one".