66704001097 has 2 divisors, whose sum is σ = 66704001098. Its totient is φ = 66704001096.

The previous prime is 66704001041. The next prime is 66704001109. The reversal of 66704001097 is 79010040766.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 66654846976 + 49154121 = 258176^2 + 7011^2 .

It is a cyclic number.

It is not a de Polignac number, because 66704001097 - 2²⁷ = 66569783369 is a prime.

It is not a weakly prime, because it can be changed into another prime (66704071097) 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, 33352000548 + 33352000549.

It is an arithmetic number, because the mean of its divisors is an integer number (33352000549).

Almost surely, 2^66704001097 is an apocalyptic number.

It is an amenable number.

66704001097 is a deficient number, since it is larger than the sum of its proper divisors (1).

66704001097 is an equidigital number, since it uses as much as digits as its factorization.

66704001097 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 63504, while the sum is 40.

The spelling of 66704001097 in words is "sixty-six billion, seven hundred four million, one thousand, ninety-seven".