642616748 has 12 divisors (see below), whose sum is σ = 1135090152. Its totient is φ = 318305280.

The previous prime is 642616729. The next prime is 642616753. The reversal of 642616748 is 847616246.

642616748 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 642616699 and 642616708.

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, 750293 + ... + 751148.

It is an arithmetic number, because the mean of its divisors is an integer number (94590846).

Almost surely, 2^642616748 is an apocalyptic number.

It is an amenable number.

642616748 is a deficient number, since it is larger than the sum of its proper divisors (492473404).

642616748 is a wasteful number, since it uses less digits than its factorization.

642616748 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1501552 (or 1501550 counting only the distinct ones).

The product of its digits is 387072, while the sum is 44.

The square root of 642616748 is about 25349.8865480696. The cubic root of 642616748 is about 862.9467815603.

The spelling of 642616748 in words is "six hundred forty-two million, six hundred sixteen thousand, seven hundred forty-eight".