8298781 has 2 divisors, whose sum is σ = 8298782. Its totient is φ = 8298780.

The previous prime is 8298779. The next prime is 8298803. The reversal of 8298781 is 1878928.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7650756 + 648025 = 2766^2 + 805^2 .

It is a cyclic number.

It is not a de Polignac number, because 8298781 - 2¹ = 8298779 is a prime.

It is a super-2 number, since 2×8298781² = 137739532171922, which contains 22 as substring.

Together with 8298779, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8298721) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4149390 + 4149391.

It is an arithmetic number, because the mean of its divisors is an integer number (4149391).

Almost surely, 2^8298781 is an apocalyptic number.

It is an amenable number.

8298781 is a deficient number, since it is larger than the sum of its proper divisors (1).

8298781 is an equidigital number, since it uses as much as digits as its factorization.

8298781 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 64512, while the sum is 43.

The square root of 8298781 is about 2880.7604898707. The cubic root of 8298781 is about 202.4594726598.

The spelling of 8298781 in words is "eight million, two hundred ninety-eight thousand, seven hundred eighty-one".