284304973681 has 4 divisors (see below), whose sum is σ = 284313499200. Its totient is φ = 284296448164.

The previous prime is 284304973619. The next prime is 284304973709. The reversal of 284304973681 is 186379403482.

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 284304973681 - 2¹⁷ = 284304842609 is a prime.

It is a super-2 number, since 2×284304973681² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (284304773681) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4212541 + ... + 4279498.

It is an arithmetic number, because the mean of its divisors is an integer number (71078374800).

Almost surely, 2^284304973681 is an apocalyptic number.

It is an amenable number.

284304973681 is a deficient number, since it is larger than the sum of its proper divisors (8525519).

284304973681 is an equidigital number, since it uses as much as digits as its factorization.

284304973681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8525518.

The product of its (nonzero) digits is 6967296, while the sum is 55.

The spelling of 284304973681 in words is "two hundred eighty-four billion, three hundred four million, nine hundred seventy-three thousand, six hundred eighty-one".