4721616644 has 6 divisors (see below), whose sum is σ = 8262829134. Its totient is φ = 2360808320.

The previous prime is 4721616631. The next prime is 4721616661. The reversal of 4721616644 is 4466161274.

It can be written as a sum of positive squares in only one way, i.e., 4716942400 + 4674244 = 68680^2 + 2162^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 590202077 + ... + 590202084.

It is an arithmetic number, because the mean of its divisors is an integer number (1377138189).

Almost surely, 2^4721616644 is an apocalyptic number.

It is an amenable number.

4721616644 is a deficient number, since it is larger than the sum of its proper divisors (3541212490).

4721616644 is a wasteful number, since it uses less digits than its factorization.

4721616644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1180404165 (or 1180404163 counting only the distinct ones).

The product of its digits is 193536, while the sum is 41.

The square root of 4721616644 is about 68714.0207235758. The cubic root of 4721616644 is about 1677.6327965393.

The spelling of 4721616644 in words is "four billion, seven hundred twenty-one million, six hundred sixteen thousand, six hundred forty-four".