284965561 has 8 divisors (see below), whose sum is σ = 301121280. Its totient is φ = 269123712.

The previous prime is 284965537. The next prime is 284965573. The reversal of 284965561 is 165569482.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 284965561 - 2¹⁷ = 284834489 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (284963561) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 76600 + ... + 80233.

It is an arithmetic number, because the mean of its divisors is an integer number (37640160).

Almost surely, 2^284965561 is an apocalyptic number.

It is an amenable number.

284965561 is a deficient number, since it is larger than the sum of its proper divisors (16155719).

284965561 is a wasteful number, since it uses less digits than its factorization.

284965561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 156935.

The product of its digits is 518400, while the sum is 46.

The square root of 284965561 is about 16880.9229901685. The cubic root of 284965561 is about 658.0579281231.

The spelling of 284965561 in words is "two hundred eighty-four million, nine hundred sixty-five thousand, five hundred sixty-one".