647693457067 has 2 divisors, whose sum is σ = 647693457068. Its totient is φ = 647693457066.

The previous prime is 647693457043. The next prime is 647693457079. The reversal of 647693457067 is 760754396746.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 647693457067 - 2²⁷ = 647559239339 is a prime.

It is not a weakly prime, because it can be changed into another prime (647693457167) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 323846728533 + 323846728534.

It is an arithmetic number, because the mean of its divisors is an integer number (323846728534).

Almost surely, 2^647693457067 is an apocalyptic number.

647693457067 is a deficient number, since it is larger than the sum of its proper divisors (1).

647693457067 is an equidigital number, since it uses as much as digits as its factorization.

647693457067 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 160030080, while the sum is 64.

The spelling of 647693457067 in words is "six hundred forty-seven billion, six hundred ninety-three million, four hundred fifty-seven thousand, sixty-seven".