667703305567 has 2 divisors, whose sum is σ = 667703305568. Its totient is φ = 667703305566.

The previous prime is 667703305553. The next prime is 667703305571. The reversal of 667703305567 is 765503307766.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 667703305567 - 2⁷ = 667703305439 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (667703305597) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 333851652783 + 333851652784.

It is an arithmetic number, because the mean of its divisors is an integer number (333851652784).

Almost surely, 2^667703305567 is an apocalyptic number.

667703305567 is a deficient number, since it is larger than the sum of its proper divisors (1).

667703305567 is an equidigital number, since it uses as much as digits as its factorization.

667703305567 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 16669800, while the sum is 55.

The spelling of 667703305567 in words is "six hundred sixty-seven billion, seven hundred three million, three hundred five thousand, five hundred sixty-seven".