7322720617 has 2 divisors, whose sum is σ = 7322720618. Its totient is φ = 7322720616.

The previous prime is 7322720599. The next prime is 7322720633. The reversal of 7322720617 is 7160272237.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 5982867801 + 1339852816 = 77349^2 + 36604^2 .

It is a cyclic number.

It is not a de Polignac number, because 7322720617 - 2¹⁵ = 7322687849 is a prime.

It is not a weakly prime, because it can be changed into another prime (7322720117) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3661360308 + 3661360309.

It is an arithmetic number, because the mean of its divisors is an integer number (3661360309).

Almost surely, 2^7322720617 is an apocalyptic number.

It is an amenable number.

7322720617 is a deficient number, since it is larger than the sum of its proper divisors (1).

7322720617 is an equidigital number, since it uses as much as digits as its factorization.

7322720617 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 49392, while the sum is 37.

The square root of 7322720617 is about 85572.8965093504. The cubic root of 7322720617 is about 1941.8878969506.

The spelling of 7322720617 in words is "seven billion, three hundred twenty-two million, seven hundred twenty thousand, six hundred seventeen".