284608620221 has 4 divisors (see below), whose sum is σ = 289432495200. Its totient is φ = 279784745244.

The previous prime is 284608620217. The next prime is 284608620271. The reversal of 284608620221 is 122026806482.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 284608620221 - 2² = 284608620217 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (284608620271) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2411937401 + ... + 2411937518.

It is an arithmetic number, because the mean of its divisors is an integer number (72358123800).

Almost surely, 2^284608620221 is an apocalyptic number.

It is an amenable number.

284608620221 is a deficient number, since it is larger than the sum of its proper divisors (4823874979).

284608620221 is an equidigital number, since it uses as much as digits as its factorization.

284608620221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4823874978.

The product of its (nonzero) digits is 147456, while the sum is 41.

The spelling of 284608620221 in words is "two hundred eighty-four billion, six hundred eight million, six hundred twenty thousand, two hundred twenty-one".