667441241 has 2 divisors, whose sum is σ = 667441242. Its totient is φ = 667441240.

The previous prime is 667441237. The next prime is 667441279. The reversal of 667441241 is 142144766.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 621255625 + 46185616 = 24925^2 + 6796^2 .

It is a cyclic number.

It is not a de Polignac number, because 667441241 - 2² = 667441237 is a prime.

It is not a weakly prime, because it can be changed into another prime (667441231) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 333720620 + 333720621.

It is an arithmetic number, because the mean of its divisors is an integer number (333720621).

Almost surely, 2^667441241 is an apocalyptic number.

It is an amenable number.

667441241 is a deficient number, since it is larger than the sum of its proper divisors (1).

667441241 is an equidigital number, since it uses as much as digits as its factorization.

667441241 is an evil number, because the sum of its binary digits is even.

The product of its digits is 32256, while the sum is 35.

The square root of 667441241 is about 25834.8841878573. The cubic root of 667441241 is about 873.9186602943.

The spelling of 667441241 in words is "six hundred sixty-seven million, four hundred forty-one thousand, two hundred forty-one".