7720474741 has 12 divisors (see below), whose sum is σ = 9509253228. Its totient is φ = 6228281472.

The previous prime is 7720474739. The next prime is 7720474747. The reversal of 7720474741 is 1474740277.

It can be written as a sum of positive squares in 2 ways, for example, as 5201438641 + 2519036100 = 72121^2 + 50190^2 .

It is not a de Polignac number, because 7720474741 - 2¹ = 7720474739 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7720474747) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4633306 + ... + 4634971.

It is an arithmetic number, because the mean of its divisors is an integer number (792437769).

Almost surely, 2^7720474741 is an apocalyptic number.

It is an amenable number.

7720474741 is a deficient number, since it is larger than the sum of its proper divisors (1788778487).

7720474741 is a wasteful number, since it uses less digits than its factorization.

7720474741 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9268308 (or 9268301 counting only the distinct ones).

The product of its (nonzero) digits is 307328, while the sum is 43.

The square root of 7720474741 is about 87866.2320860523. The cubic root of 7720474741 is about 1976.4295362840.

The spelling of 7720474741 in words is "seven billion, seven hundred twenty million, four hundred seventy-four thousand, seven hundred forty-one".