6897770329 has 2 divisors, whose sum is σ = 6897770330. Its totient is φ = 6897770328.

The previous prime is 6897770323. The next prime is 6897770377. The reversal of 6897770329 is 9230777986.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4076567104 + 2821203225 = 63848^2 + 53115^2 .

It is a cyclic number.

It is not a de Polignac number, because 6897770329 - 2²¹ = 6895673177 is a prime.

It is not a weakly prime, because it can be changed into another prime (6897770323) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3448885164 + 3448885165.

It is an arithmetic number, because the mean of its divisors is an integer number (3448885165).

Almost surely, 2^6897770329 is an apocalyptic number.

It is an amenable number.

6897770329 is a deficient number, since it is larger than the sum of its proper divisors (1).

6897770329 is an equidigital number, since it uses as much as digits as its factorization.

6897770329 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8001504, while the sum is 58.

The square root of 6897770329 is about 83052.8165025124. The cubic root of 6897770329 is about 1903.5731771089.

The spelling of 6897770329 in words is "six billion, eight hundred ninety-seven million, seven hundred seventy thousand, three hundred twenty-nine".