7720330065 has 64 divisors (see below), whose sum is σ = 14512006656. Its totient is φ = 3431780352.

The previous prime is 7720330001. The next prime is 7720330067. The reversal of 7720330065 is 5600330277.

It is not a de Polignac number, because 7720330065 - 2⁶ = 7720330001 is a prime.

It is not an unprimeable number, because it can be changed into a prime (7720330067) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 622707 + ... + 634983.

It is an arithmetic number, because the mean of its divisors is an integer number (226750104).

Almost surely, 2^7720330065 is an apocalyptic number.

It is an amenable number.

7720330065 is a deficient number, since it is larger than the sum of its proper divisors (6791676591).

7720330065 is a wasteful number, since it uses less digits than its factorization.

7720330065 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12458.

The product of its (nonzero) digits is 26460, while the sum is 33.

The square root of 7720330065 is about 87865.4088080173. The cubic root of 7720330065 is about 1976.4171905964.

The spelling of 7720330065 in words is "seven billion, seven hundred twenty million, three hundred thirty thousand, sixty-five".