67640644604683 has 2 divisors, whose sum is σ = 67640644604684. Its totient is φ = 67640644604682.

The previous prime is 67640644604677. The next prime is 67640644604711. The reversal of 67640644604683 is 38640644604676.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 67640644604683 - 2³³ = 67632054670091 is a prime.

It is not a weakly prime, because it can be changed into another prime (67640644604623) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33820322302341 + 33820322302342.

It is an arithmetic number, because the mean of its divisors is an integer number (33820322302342).

Almost surely, 2^{67640644604683} is an apocalyptic number.

67640644604683 is a deficient number, since it is larger than the sum of its proper divisors (1).

67640644604683 is an equidigital number, since it uses as much as digits as its factorization.

67640644604683 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 334430208, while the sum is 64.

The spelling of 67640644604683 in words is "sixty-seven trillion, six hundred forty billion, six hundred forty-four million, six hundred four thousand, six hundred eighty-three".