784481 has 2 divisors, whose sum is σ = 784482. Its totient is φ = 784480.

The previous prime is 784471. The next prime is 784489. The reversal of 784481 is 184487.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 781456 + 3025 = 884^2 + 55^2 .

It is an emirp because it is prime and its reverse (184487) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 784481 - 2¹⁸ = 522337 is a prime.

It is a super-3 number, since 3×784481³ = 1448333390641069923, which contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Chen prime.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 784481.

It is not a weakly prime, because it can be changed into another prime (784489) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 392240 + 392241.

It is an arithmetic number, because the mean of its divisors is an integer number (392241).

2⁷⁸⁴⁴⁸¹ is an apocalyptic number.

It is an amenable number.

784481 is a deficient number, since it is larger than the sum of its proper divisors (1).

784481 is an equidigital number, since it uses as much as digits as its factorization.

784481 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 7168, while the sum is 32.

The square root of 784481 is about 885.7093202626. The cubic root of 784481 is about 92.2275792977.

The spelling of 784481 in words is "seven hundred eighty-four thousand, four hundred eighty-one".