648802810740 has 192 divisors, whose sum is σ = 2200334298624. Its totient is φ = 139445010432.

The previous prime is 648802810739. The next prime is 648802810741. The reversal of 648802810740 is 47018208846.

It is an interprime number because it is at equal distance from previous prime (648802810739) and next prime (648802810741).

It is a self number, because there is not a number n which added to its sum of digits gives 648802810740.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (648802810741) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 7762452 + ... + 7845588.

It is an arithmetic number, because the mean of its divisors is an integer number (11460074472).

Almost surely, 2^648802810740 is an apocalyptic number.

648802810740 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 648802810740, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1100167149312).

648802810740 is an abundant number, since it is smaller than the sum of its proper divisors (1551531487884).

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

648802810740 is a wasteful number, since it uses less digits than its factorization.

648802810740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84266 (or 84264 counting only the distinct ones).

The product of its (nonzero) digits is 688128, while the sum is 48.

The spelling of 648802810740 in words is "six hundred forty-eight billion, eight hundred two million, eight hundred ten thousand, seven hundred forty".