7444720745 has 64 divisors (see below), whose sum is σ = 11358406656. Its totient is φ = 4549754880.

The previous prime is 7444720741. The next prime is 7444720757. The reversal of 7444720745 is 5470274447.

It is not a de Polignac number, because 7444720745 - 2² = 7444720741 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 7444720696 and 7444720705.

It is not an unprimeable number, because it can be changed into a prime (7444720741) 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, 6628754 + ... + 6629876.

It is an arithmetic number, because the mean of its divisors is an integer number (177475104).

Almost surely, 2^7444720745 is an apocalyptic number.

It is an amenable number.

7444720745 is a deficient number, since it is larger than the sum of its proper divisors (3913685911).

7444720745 is a wasteful number, since it uses less digits than its factorization.

7444720745 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1470.

The product of its (nonzero) digits is 878080, while the sum is 44.

The square root of 7444720745 is about 86282.7951853671. The cubic root of 7444720745 is about 1952.6128240275.

The spelling of 7444720745 in words is "seven billion, four hundred forty-four million, seven hundred twenty thousand, seven hundred forty-five".