1284684085 has 8 divisors (see below), whose sum is σ = 1544789376. Its totient is φ = 1025634960.

The previous prime is 1284684077. The next prime is 1284684131. The reversal of 1284684085 is 5804864821.

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

It is not a de Polignac number, because 1284684085 - 2³ = 1284684077 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 261361 + ... + 266230.

It is an arithmetic number, because the mean of its divisors is an integer number (193098672).

Almost surely, 2^1284684085 is an apocalyptic number.

It is an amenable number.

1284684085 is a deficient number, since it is larger than the sum of its proper divisors (260105291).

1284684085 is an equidigital number, since it uses as much as digits as its factorization.

1284684085 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 528083.

The product of its (nonzero) digits is 491520, while the sum is 46.

The square root of 1284684085 is about 35842.4899386189. The cubic root of 1284684085 is about 1087.0898679814.

The spelling of 1284684085 in words is "one billion, two hundred eighty-four million, six hundred eighty-four thousand, eighty-five".