6747772249 has 2 divisors, whose sum is σ = 6747772250. Its totient is φ = 6747772248.

The previous prime is 6747772219. The next prime is 6747772261. The reversal of 6747772249 is 9422777476.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6665089600 + 82682649 = 81640^2 + 9093^2 .

It is a cyclic number.

It is not a de Polignac number, because 6747772249 - 2⁵ = 6747772217 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 6747772249.

It is not a weakly prime, because it can be changed into another prime (6747772219) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3373886124 + 3373886125.

It is an arithmetic number, because the mean of its divisors is an integer number (3373886125).

Almost surely, 2^6747772249 is an apocalyptic number.

It is an amenable number.

6747772249 is a deficient number, since it is larger than the sum of its proper divisors (1).

6747772249 is an equidigital number, since it uses as much as digits as its factorization.

6747772249 is an evil number, because the sum of its binary digits is even.

The product of its digits is 8297856, while the sum is 55.

The square root of 6747772249 is about 82144.8248461216. The cubic root of 6747772249 is about 1889.6736415670.

The spelling of 6747772249 in words is "six billion, seven hundred forty-seven million, seven hundred seventy-two thousand, two hundred forty-nine".