6747421693 has 2 divisors, whose sum is σ = 6747421694. Its totient is φ = 6747421692.

The previous prime is 6747421649. The next prime is 6747421697. The reversal of 6747421693 is 3961247476.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6444557284 + 302864409 = 80278^2 + 17403^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6747421693 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6747421697) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3373710846 + 3373710847.

It is an arithmetic number, because the mean of its divisors is an integer number (3373710847).

Almost surely, 2^6747421693 is an apocalyptic number.

It is an amenable number.

6747421693 is a deficient number, since it is larger than the sum of its proper divisors (1).

6747421693 is an equidigital number, since it uses as much as digits as its factorization.

6747421693 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1524096, while the sum is 49.

The square root of 6747421693 is about 82142.6910503911. The cubic root of 6747421693 is about 1889.6409172899.

The spelling of 6747421693 in words is "six billion, seven hundred forty-seven million, four hundred twenty-one thousand, six hundred ninety-three".