7644724361 has 2 divisors, whose sum is σ = 7644724362. Its totient is φ = 7644724360.

The previous prime is 7644724349. The next prime is 7644724369. The reversal of 7644724361 is 1634274467.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7041727225 + 602997136 = 83915^2 + 24556^2 .

It is a cyclic number.

It is not a de Polignac number, because 7644724361 - 2¹⁰ = 7644723337 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (7644724369) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3822362180 + 3822362181.

It is an arithmetic number, because the mean of its divisors is an integer number (3822362181).

Almost surely, 2^7644724361 is an apocalyptic number.

7644724361 is the 46736-th centered heptagonal number.

It is an amenable number.

7644724361 is a deficient number, since it is larger than the sum of its proper divisors (1).

7644724361 is an equidigital number, since it uses as much as digits as its factorization.

7644724361 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 677376, while the sum is 44.

The square root of 7644724361 is about 87434.1144005016. The cubic root of 7644724361 is about 1969.9442863473.

The spelling of 7644724361 in words is "seven billion, six hundred forty-four million, seven hundred twenty-four thousand, three hundred sixty-one".