674645913647 has 2 divisors, whose sum is σ = 674645913648. Its totient is φ = 674645913646.

The previous prime is 674645913637. The next prime is 674645913671. The reversal of 674645913647 is 746319546476.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 674645913647 - 2¹⁸ = 674645651503 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 674645913647.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (674645913607) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 337322956823 + 337322956824.

It is an arithmetic number, because the mean of its divisors is an integer number (337322956824).

Almost surely, 2^674645913647 is an apocalyptic number.

674645913647 is a deficient number, since it is larger than the sum of its proper divisors (1).

674645913647 is an equidigital number, since it uses as much as digits as its factorization.

674645913647 is an evil number, because the sum of its binary digits is even.

The product of its digits is 91445760, while the sum is 62.

The spelling of 674645913647 in words is "six hundred seventy-four billion, six hundred forty-five million, nine hundred thirteen thousand, six hundred forty-seven".