667224241 has 2 divisors, whose sum is σ = 667224242. Its totient is φ = 667224240.

The previous prime is 667224179. The next prime is 667224269. The reversal of 667224241 is 142422766.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 382593600 + 284630641 = 19560^2 + 16871^2 .

It is a cyclic number.

It is not a de Polignac number, because 667224241 - 2⁹ = 667223729 is a prime.

It is equal to p_34641916 and since 667224241 and 34641916 have the same sum of digits, it is a Honaker prime.

It is a junction number, because it is equal to n+sod(n) for n = 667224197 and 667224206.

It is not a weakly prime, because it can be changed into another prime (667224841) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 333612120 + 333612121.

It is an arithmetic number, because the mean of its divisors is an integer number (333612121).

Almost surely, 2^667224241 is an apocalyptic number.

It is an amenable number.

667224241 is a deficient number, since it is larger than the sum of its proper divisors (1).

667224241 is an equidigital number, since it uses as much as digits as its factorization.

667224241 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 32256, while the sum is 34.

The square root of 667224241 is about 25830.6840985677. The cubic root of 667224241 is about 873.8239398938.

The spelling of 667224241 in words is "six hundred sixty-seven million, two hundred twenty-four thousand, two hundred forty-one".