648496860 has 48 divisors (see below), whose sum is σ = 1980865152. Its totient is φ = 157211200.

The previous prime is 648496813. The next prime is 648496867. The reversal of 648496860 is 68694846.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (648496867) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 490626 + ... + 491945.

It is an arithmetic number, because the mean of its divisors is an integer number (41268024).

Almost surely, 2^648496860 is an apocalyptic number.

648496860 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

648496860 is an abundant number, since it is smaller than the sum of its proper divisors (1332368292).

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

648496860 is a wasteful number, since it uses less digits than its factorization.

648496860 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 982594 (or 982592 counting only the distinct ones).

The product of its (nonzero) digits is 1990656, while the sum is 51.

The square root of 648496860 is about 25465.6015047750. The cubic root of 648496860 is about 865.5708573225.

The spelling of 648496860 in words is "six hundred forty-eight million, four hundred ninety-six thousand, eight hundred sixty".