667232826517 has 2 divisors, whose sum is σ = 667232826518. Its totient is φ = 667232826516.

The previous prime is 667232826473. The next prime is 667232826523. The reversal of 667232826517 is 715628232766.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 487638252721 + 179594573796 = 698311^2 + 423786^2 .

It is a cyclic number.

It is not a de Polignac number, because 667232826517 - 2⁷ = 667232826389 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (667232826317) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 333616413258 + 333616413259.

It is an arithmetic number, because the mean of its divisors is an integer number (333616413259).

Almost surely, 2^667232826517 is an apocalyptic number.

It is an amenable number.

667232826517 is a deficient number, since it is larger than the sum of its proper divisors (1).

667232826517 is an equidigital number, since it uses as much as digits as its factorization.

667232826517 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 10160640, while the sum is 55.

The spelling of 667232826517 in words is "six hundred sixty-seven billion, two hundred thirty-two million, eight hundred twenty-six thousand, five hundred seventeen".