6742968409 has 2 divisors, whose sum is σ = 6742968410. Its totient is φ = 6742968408.

The previous prime is 6742968361. The next prime is 6742968457. The reversal of 6742968409 is 9048692476.

It is a happy number.

It is a balanced prime because it is at equal distance from previous prime (6742968361) and next prime (6742968457).

It can be written as a sum of positive squares in only one way, i.e., 6549341184 + 193627225 = 80928^2 + 13915^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6742968409 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 6742968409.

It is not a weakly prime, because it can be changed into another prime (6742968469) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3371484204 + 3371484205.

It is an arithmetic number, because the mean of its divisors is an integer number (3371484205).

Almost surely, 2^6742968409 is an apocalyptic number.

It is an amenable number.

6742968409 is a deficient number, since it is larger than the sum of its proper divisors (1).

6742968409 is an equidigital number, since it uses as much as digits as its factorization.

6742968409 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5225472, while the sum is 55.

The square root of 6742968409 is about 82115.5795753766. The cubic root of 6742968409 is about 1889.2251061331.

The spelling of 6742968409 in words is "six billion, seven hundred forty-two million, nine hundred sixty-eight thousand, four hundred nine".