667304017 has 2 divisors, whose sum is σ = 667304018. Its totient is φ = 667304016.

The previous prime is 667303969. The next prime is 667304063. The reversal of 667304017 is 710403766.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 661466961 + 5837056 = 25719^2 + 2416^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-667304017 is a prime.

It is a super-2 number, since 2×667304017² = 890589302208672578, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (667304117) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 333652008 + 333652009.

It is an arithmetic number, because the mean of its divisors is an integer number (333652009).

Almost surely, 2^667304017 is an apocalyptic number.

It is an amenable number.

667304017 is a deficient number, since it is larger than the sum of its proper divisors (1).

667304017 is an equidigital number, since it uses as much as digits as its factorization.

667304017 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 21168, while the sum is 34.

The square root of 667304017 is about 25832.2282623857. The cubic root of 667304017 is about 873.8587644681.

The spelling of 667304017 in words is "six hundred sixty-seven million, three hundred four thousand, seventeen".