6719940673 has 2 divisors, whose sum is σ = 6719940674. Its totient is φ = 6719940672.

The previous prime is 6719940599. The next prime is 6719940827. The reversal of 6719940673 is 3760499176.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6712033329 + 7907344 = 81927^2 + 2812^2 .

It is a cyclic number.

It is not a de Polignac number, because 6719940673 - 2²¹ = 6717843521 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 6719940673.

It is not a weakly prime, because it can be changed into another prime (6719940173) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3359970336 + 3359970337.

It is an arithmetic number, because the mean of its divisors is an integer number (3359970337).

Almost surely, 2^6719940673 is an apocalyptic number.

It is an amenable number.

6719940673 is a deficient number, since it is larger than the sum of its proper divisors (1).

6719940673 is an equidigital number, since it uses as much as digits as its factorization.

6719940673 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1714608, while the sum is 52.

The square root of 6719940673 is about 81975.2442692305. The cubic root of 6719940673 is about 1887.0720388041.

The spelling of 6719940673 in words is "six billion, seven hundred nineteen million, nine hundred forty thousand, six hundred seventy-three".