667760701 has 2 divisors, whose sum is σ = 667760702. Its totient is φ = 667760700.

The previous prime is 667760669. The next prime is 667760729. The reversal of 667760701 is 107067766.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 487261476 + 180499225 = 22074^2 + 13435^2 .

It is a cyclic number.

It is not a de Polignac number, because 667760701 - 2⁵ = 667760669 is a prime.

It is a super-2 number, since 2×667760701² = 891808707600022802, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (667760741) 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, 333880350 + 333880351.

It is an arithmetic number, because the mean of its divisors is an integer number (333880351).

Almost surely, 2^667760701 is an apocalyptic number.

It is an amenable number.

667760701 is a deficient number, since it is larger than the sum of its proper divisors (1).

667760701 is an equidigital number, since it uses as much as digits as its factorization.

667760701 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 74088, while the sum is 40.

The square root of 667760701 is about 25841.0661738249. The cubic root of 667760701 is about 874.0580670855.

The spelling of 667760701 in words is "six hundred sixty-seven million, seven hundred sixty thousand, seven hundred one".