6779484749 has 2 divisors, whose sum is σ = 6779484750. Its totient is φ = 6779484748.

The previous prime is 6779484731. The next prime is 6779484781. The reversal of 6779484749 is 9474849776.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6708756649 + 70728100 = 81907^2 + 8410^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6779484749 is a prime.

It is a super-2 number, since 2×6779484749² = 91922826923847186002, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6779484799) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3389742374 + 3389742375.

It is an arithmetic number, because the mean of its divisors is an integer number (3389742375).

Almost surely, 2^6779484749 is an apocalyptic number.

It is an amenable number.

6779484749 is a deficient number, since it is larger than the sum of its proper divisors (1).

6779484749 is an equidigital number, since it uses as much as digits as its factorization.

6779484749 is an evil number, because the sum of its binary digits is even.

The product of its digits is 85349376, while the sum is 65.

The square root of 6779484749 is about 82337.6265689023. The cubic root of 6779484749 is about 1892.6293153808.

The spelling of 6779484749 in words is "six billion, seven hundred seventy-nine million, four hundred eighty-four thousand, seven hundred forty-nine".