648994248 has 384 divisors, whose sum is σ = 2304288000. Its totient is φ = 165473280.

The previous prime is 648994237. The next prime is 648994249. The reversal of 648994248 is 842499846.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a nude number because it is divisible by every one of its digits.

It is a junction number, because it is equal to n+sod(n) for n = 648994194 and 648994203.

It is not an unprimeable number, because it can be changed into a prime (648994249) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 15829108 + ... + 15829148.

It is an arithmetic number, because the mean of its divisors is an integer number (6000750).

Almost surely, 2^648994248 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 648994248, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1152144000).

648994248 is an abundant number, since it is smaller than the sum of its proper divisors (1655293752).

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

648994248 is a wasteful number, since it uses less digits than its factorization.

648994248 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 130 (or 101 counting only the distinct ones).

The product of its digits is 3981312, while the sum is 54.

The square root of 648994248 is about 25475.3655125888. The cubic root of 648994248 is about 865.7920943411.

The spelling of 648994248 in words is "six hundred forty-eight million, nine hundred ninety-four thousand, two hundred forty-eight".