667701601027 has 2 divisors, whose sum is σ = 667701601028. Its totient is φ = 667701601026.

The previous prime is 667701600919. The next prime is 667701601037. The reversal of 667701601027 is 720106107766.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 667701601027 - 2²⁷ = 667567383299 is a prime.

It is not a weakly prime, because it can be changed into another prime (667701601037) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 333850800513 + 333850800514.

It is an arithmetic number, because the mean of its divisors is an integer number (333850800514).

Almost surely, 2^667701601027 is an apocalyptic number.

667701601027 is a deficient number, since it is larger than the sum of its proper divisors (1).

667701601027 is an equidigital number, since it uses as much as digits as its factorization.

667701601027 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 148176, while the sum is 43.

The spelling of 667701601027 in words is "six hundred sixty-seven billion, seven hundred one million, six hundred one thousand, twenty-seven".