648080568 has 128 divisors (see below), whose sum is σ = 1905292800. Its totient is φ = 203689728.

The previous prime is 648080551. The next prime is 648080581. The reversal of 648080568 is 865080846.

648080568 is a `hidden beast` number, since 6 + 4 + 8 + 0 + 80 + 568 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 361771 + ... + 363557.

It is an arithmetic number, because the mean of its divisors is an integer number (14885100).

Almost surely, 2^648080568 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 648080568, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (952646400).

648080568 is an abundant number, since it is smaller than the sum of its proper divisors (1257212232).

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

648080568 is a wasteful number, since it uses less digits than its factorization.

648080568 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1898 (or 1888 counting only the distinct ones).

The product of its (nonzero) digits is 368640, while the sum is 45.

The square root of 648080568 is about 25457.4265785055. The cubic root of 648080568 is about 865.3856046375.

The spelling of 648080568 in words is "six hundred forty-eight million, eighty thousand, five hundred sixty-eight".