7684827281 has 2 divisors, whose sum is σ = 7684827282. Its totient is φ = 7684827280.

The previous prime is 7684827263. The next prime is 7684827287. The reversal of 7684827281 is 1827284867.

7684827281 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7039210000 + 645617281 = 83900^2 + 25409^2 .

It is a cyclic number.

It is not a de Polignac number, because 7684827281 - 2¹⁴ = 7684810897 is a prime.

It is a super-2 number, since 2×7684827281² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (7684827287) 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, 3842413640 + 3842413641.

It is an arithmetic number, because the mean of its divisors is an integer number (3842413641).

Almost surely, 2^7684827281 is an apocalyptic number.

It is an amenable number.

7684827281 is a deficient number, since it is larger than the sum of its proper divisors (1).

7684827281 is an equidigital number, since it uses as much as digits as its factorization.

7684827281 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2408448, while the sum is 53.

The square root of 7684827281 is about 87663.1466523989. The cubic root of 7684827281 is about 1973.3829443683.

The spelling of 7684827281 in words is "seven billion, six hundred eighty-four million, eight hundred twenty-seven thousand, two hundred eighty-one".