8680312789 has 2 divisors, whose sum is σ = 8680312790. Its totient is φ = 8680312788.

The previous prime is 8680312757. The next prime is 8680312793. The reversal of 8680312789 is 9872130868.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8454802500 + 225510289 = 91950^2 + 15017^2 .

It is a cyclic number.

It is not a de Polignac number, because 8680312789 - 2⁵ = 8680312757 is a prime.

It is a super-2 number, since 2×8680312789² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8680312709) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4340156394 + 4340156395.

It is an arithmetic number, because the mean of its divisors is an integer number (4340156395).

Almost surely, 2^8680312789 is an apocalyptic number.

It is an amenable number.

8680312789 is a deficient number, since it is larger than the sum of its proper divisors (1).

8680312789 is an equidigital number, since it uses as much as digits as its factorization.

8680312789 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1161216, while the sum is 52.

The square root of 8680312789 is about 93168.1962313321. The cubic root of 8680312789 is about 2055.1575695882.

The spelling of 8680312789 in words is "eight billion, six hundred eighty million, three hundred twelve thousand, seven hundred eighty-nine".