667375107689 has 2 divisors, whose sum is σ = 667375107690. Its totient is φ = 667375107688.

The previous prime is 667375107647. The next prime is 667375107731. The reversal of 667375107689 is 986701573766.

It is a balanced prime because it is at equal distance from previous prime (667375107647) and next prime (667375107731).

It can be written as a sum of positive squares in only one way, i.e., 580590661225 + 86784446464 = 761965^2 + 294592^2 .

It is a cyclic number.

It is not a de Polignac number, because 667375107689 - 2¹⁶ = 667375042153 is a prime.

It is not a weakly prime, because it can be changed into another prime (667375107089) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 333687553844 + 333687553845.

It is an arithmetic number, because the mean of its divisors is an integer number (333687553845).

Almost surely, 2^667375107689 is an apocalyptic number.

It is an amenable number.

667375107689 is a deficient number, since it is larger than the sum of its proper divisors (1).

667375107689 is an equidigital number, since it uses as much as digits as its factorization.

667375107689 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 80015040, while the sum is 65.

The spelling of 667375107689 in words is "six hundred sixty-seven billion, three hundred seventy-five million, one hundred seven thousand, six hundred eighty-nine".