648708860 has 24 divisors (see below), whose sum is σ = 1375780896. Its totient is φ = 256913600.

The previous prime is 648708829. The next prime is 648708869. The reversal of 648708860 is 68807846.

It is a happy number.

648708860 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (648708869) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 158552 + ... + 162591.

It is an arithmetic number, because the mean of its divisors is an integer number (57324204).

Almost surely, 2^648708860 is an apocalyptic number.

It is an amenable number.

648708860 is an abundant number, since it is smaller than the sum of its proper divisors (727072036).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

648708860 is a wasteful number, since it uses less digits than its factorization.

648708860 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 321253 (or 321251 counting only the distinct ones).

The product of its (nonzero) digits is 516096, while the sum is 47.

The square root of 648708860 is about 25469.7636424055. The cubic root of 648708860 is about 865.6651682542.

The spelling of 648708860 in words is "six hundred forty-eight million, seven hundred eight thousand, eight hundred sixty".