667537163 has 2 divisors, whose sum is σ = 667537164. Its totient is φ = 667537162.

The previous prime is 667537063. The next prime is 667537177. The reversal of 667537163 is 361735766.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 667537163 - 2⁸ = 667536907 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (667537063) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 333768581 + 333768582.

It is an arithmetic number, because the mean of its divisors is an integer number (333768582).

Almost surely, 2^667537163 is an apocalyptic number.

667537163 is a deficient number, since it is larger than the sum of its proper divisors (1).

667537163 is an equidigital number, since it uses as much as digits as its factorization.

667537163 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 476280, while the sum is 44.

The square root of 667537163 is about 25836.7405645526. The cubic root of 667537163 is about 873.9605236600.

The spelling of 667537163 in words is "six hundred sixty-seven million, five hundred thirty-seven thousand, one hundred sixty-three".