7322720613 has 16 divisors (see below), whose sum is σ = 10546460736. Its totient is φ = 4492667520.

The previous prime is 7322720599. The next prime is 7322720617. The reversal of 7322720613 is 3160272237.

It is not a de Polignac number, because 7322720613 - 2⁹ = 7322720101 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7322720617) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 270720 + ... + 296537.

It is an arithmetic number, because the mean of its divisors is an integer number (659153796).

Almost surely, 2^7322720613 is an apocalyptic number.

It is an amenable number.

7322720613 is a deficient number, since it is larger than the sum of its proper divisors (3223740123).

7322720613 is a wasteful number, since it uses less digits than its factorization.

7322720613 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 567604.

The product of its (nonzero) digits is 21168, while the sum is 33.

The square root of 7322720613 is about 85572.8964859785. The cubic root of 7322720613 is about 1941.8878965970.

The spelling of 7322720613 in words is "seven billion, three hundred twenty-two million, seven hundred twenty thousand, six hundred thirteen".