647874920448 has 900 divisors, whose sum is σ = 2315986501752. Its totient is φ = 180592312320.

The previous prime is 647874920447. The next prime is 647874920449. The reversal of 647874920448 is 844029478746.

647874920448 is a `hidden beast` number, since 6 + 478 + 74 + 92 + 0 + 4 + 4 + 8 = 666.

It is an interprime number because it is at equal distance from previous prime (647874920447) and next prime (647874920449).

It is a Harshad number since it is a multiple of its sum of digits (63).

It is not an unprimeable number, because it can be changed into a prime (647874920443) by changing a digit.

It is a polite number, since it can be written in 59 ways as a sum of consecutive naturals, for example, 15801827308 + ... + 15801827348.

Almost surely, 2^647874920448 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 647874920448, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1157993250876).

647874920448 is an abundant number, since it is smaller than the sum of its proper divisors (1668111581304).

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

647874920448 is an frugal number, since it uses more digits than its factorization.

647874920448 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 110 (or 53 counting only the distinct ones).

The product of its (nonzero) digits is 86704128, while the sum is 63.

The spelling of 647874920448 in words is "six hundred forty-seven billion, eight hundred seventy-four million, nine hundred twenty thousand, four hundred forty-eight".