648865080 has 160 divisors (see below), whose sum is σ = 2227832640. Its totient is φ = 169309440.

The previous prime is 648865039. The next prime is 648865093. The reversal of 648865080 is 80568846.

648865080 is a `hidden beast` number, since 64 + 8 + 86 + 508 + 0 = 666.

648865080 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 150150 + ... + 154410.

It is an arithmetic number, because the mean of its divisors is an integer number (13923954).

Almost surely, 2^648865080 is an apocalyptic number.

648865080 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 648865080, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1113916320).

648865080 is an abundant number, since it is smaller than the sum of its proper divisors (1578967560).

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

648865080 is a wasteful number, since it uses less digits than its factorization.

648865080 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4331 (or 4318 counting only the distinct ones).

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

The square root of 648865080 is about 25472.8302314446. The cubic root of 648865080 is about 865.7346515858.

The spelling of 648865080 in words is "six hundred forty-eight million, eight hundred sixty-five thousand, eighty".