647822448 has 240 divisors, whose sum is σ = 2315296256. Its totient is φ = 170760960.

The previous prime is 647822431. The next prime is 647822459. The reversal of 647822448 is 844228746.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 352893 + ... + 354723.

Almost surely, 2^647822448 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 647822448, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1157648128).

647822448 is an abundant number, since it is smaller than the sum of its proper divisors (1667473808).

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

647822448 is a wasteful number, since it uses less digits than its factorization.

647822448 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1874 (or 1856 counting only the distinct ones).

The product of its digits is 688128, while the sum is 45.

The square root of 647822448 is about 25452.3564331478. The cubic root of 647822448 is about 865.2706996883.

The spelling of 647822448 in words is "six hundred forty-seven million, eight hundred twenty-two thousand, four hundred forty-eight".