667367040727 has 2 divisors, whose sum is σ = 667367040728. Its totient is φ = 667367040726.

The previous prime is 667367040619. The next prime is 667367040757. The reversal of 667367040727 is 727040763766.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 667367040727 - 2²⁷ = 667232822999 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (667367040757) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 333683520363 + 333683520364.

It is an arithmetic number, because the mean of its divisors is an integer number (333683520364).

Almost surely, 2^667367040727 is an apocalyptic number.

667367040727 is a deficient number, since it is larger than the sum of its proper divisors (1).

667367040727 is an equidigital number, since it uses as much as digits as its factorization.

667367040727 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12446784, while the sum is 55.

The spelling of 667367040727 in words is "six hundred sixty-seven billion, three hundred sixty-seven million, forty thousand, seven hundred twenty-seven".