3966647466697 has 2 divisors, whose sum is σ = 3966647466698. Its totient is φ = 3966647466696.

The previous prime is 3966647466641. The next prime is 3966647466707. The reversal of 3966647466697 is 7966647466693.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3287389629456 + 679257837241 = 1813116^2 + 824171^2 .

It is a cyclic number.

It is not a de Polignac number, because 3966647466697 - 2¹⁹ = 3966646942409 is a prime.

It is not a weakly prime, because it can be changed into another prime (3066647466697) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1983323733348 + 1983323733349.

It is an arithmetic number, because the mean of its divisors is an integer number (1983323733349).

Almost surely, 2^{3966647466697} is an apocalyptic number.

It is an amenable number.

3966647466697 is a deficient number, since it is larger than the sum of its proper divisors (1).

3966647466697 is an equidigital number, since it uses as much as digits as its factorization.

3966647466697 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 8888527872, while the sum is 79.

It can be divided in two parts, 3966647 and 466697, that added together give a palindrome (4433344).

The spelling of 3966647466697 in words is "three trillion, nine hundred sixty-six billion, six hundred forty-seven million, four hundred sixty-six thousand, six hundred ninety-seven".