6685070705897 has 2 divisors, whose sum is σ = 6685070705898. Its totient is φ = 6685070705896.

The previous prime is 6685070705857. The next prime is 6685070705903. The reversal of 6685070705897 is 7985070705866.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4739433496576 + 1945637209321 = 2177024^2 + 1394861^2 .

It is a cyclic number.

It is not a de Polignac number, because 6685070705897 - 2²² = 6685066511593 is a prime.

It is not a weakly prime, because it can be changed into another prime (6685070705827) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3342535352948 + 3342535352949.

It is an arithmetic number, because the mean of its divisors is an integer number (3342535352949).

Almost surely, 2^{6685070705897} is an apocalyptic number.

It is an amenable number.

6685070705897 is a deficient number, since it is larger than the sum of its proper divisors (1).

6685070705897 is an equidigital number, since it uses as much as digits as its factorization.

6685070705897 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 177811200, while the sum is 68.

The spelling of 6685070705897 in words is "six trillion, six hundred eighty-five billion, seventy million, seven hundred five thousand, eight hundred ninety-seven".