648370448 has 40 divisors (see below), whose sum is σ = 1376489280. Its totient is φ = 293408640.

The previous prime is 648370441. The next prime is 648370501. The reversal of 648370448 is 844073846.

It is a Harshad number since it is a multiple of its sum of digits (44).

It is a junction number, because it is equal to n+sod(n) for n = 648370399 and 648370408.

It is not an unprimeable number, because it can be changed into a prime (648370441) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 32261 + ... + 48347.

It is an arithmetic number, because the mean of its divisors is an integer number (34412232).

Almost surely, 2^648370448 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 648370448, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (688244640).

648370448 is an abundant number, since it is smaller than the sum of its proper divisors (728118832).

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

648370448 is a wasteful number, since it uses less digits than its factorization.

648370448 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16335 (or 16329 counting only the distinct ones).

The product of its (nonzero) digits is 516096, while the sum is 44.

The square root of 648370448 is about 25463.1193690011. The cubic root of 648370448 is about 865.5146115330.

The spelling of 648370448 in words is "six hundred forty-eight million, three hundred seventy thousand, four hundred forty-eight".