616332644 has 12 divisors (see below), whose sum is σ = 1096863600. Its totient is φ = 302943048.

The previous prime is 616332571. The next prime is 616332713. The reversal of 616332644 is 446233616.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1305554 + ... + 1306025.

It is an arithmetic number, because the mean of its divisors is an integer number (91405300).

Almost surely, 2^616332644 is an apocalyptic number.

It is an amenable number.

616332644 is a deficient number, since it is larger than the sum of its proper divisors (480530956).

616332644 is a wasteful number, since it uses less digits than its factorization.

616332644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2611642 (or 2611640 counting only the distinct ones).

The product of its digits is 62208, while the sum is 35.

The square root of 616332644 is about 24826.0476918901. The cubic root of 616332644 is about 851.0173028554.

The spelling of 616332644 in words is "six hundred sixteen million, three hundred thirty-two thousand, six hundred forty-four".