7820068679 has 2 divisors, whose sum is σ = 7820068680. Its totient is φ = 7820068678.

The previous prime is 7820068673. The next prime is 7820068757. The reversal of 7820068679 is 9768600287.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-7820068679 is a prime.

It is a super-2 number, since 2×7820068679² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 7820068679.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7820068673) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3910034339 + 3910034340.

It is an arithmetic number, because the mean of its divisors is an integer number (3910034340).

Almost surely, 2^7820068679 is an apocalyptic number.

7820068679 is a deficient number, since it is larger than the sum of its proper divisors (1).

7820068679 is an equidigital number, since it uses as much as digits as its factorization.

7820068679 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2032128, while the sum is 53.

The square root of 7820068679 is about 88431.1521976277. The cubic root of 7820068679 is about 1984.8918830263.

The spelling of 7820068679 in words is "seven billion, eight hundred twenty million, sixty-eight thousand, six hundred seventy-nine".