648520992 has 240 divisors, whose sum is σ = 2252017152. Its totient is φ = 179159040.

The previous prime is 648520967. The next prime is 648521039. The reversal of 648520992 is 299025846.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 561888 + ... + 563040.

Almost surely, 2^648520992 is an apocalyptic number.

648520992 is a gapful number since it is divisible by the number (62) 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 648520992, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1126008576).

648520992 is an abundant number, since it is smaller than the sum of its proper divisors (1603496160).

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

648520992 is a wasteful number, since it uses less digits than its factorization.

648520992 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1213 (or 1196 counting only the distinct ones).

The product of its (nonzero) digits is 311040, while the sum is 45.

The square root of 648520992 is about 25466.0753159964. The cubic root of 648520992 is about 865.5815937902.

The spelling of 648520992 in words is "six hundred forty-eight million, five hundred twenty thousand, nine hundred ninety-two".