647240417472 has 224 divisors, whose sum is σ = 1920019080960. Its totient is φ = 190697656320.

The previous prime is 647240417423. The next prime is 647240417521. The reversal of 647240417472 is 274714042746.

It is an interprime number because it is at equal distance from previous prime (647240417423) and next prime (647240417521).

It is a Harshad number since it is a multiple of its sum of digits (48).

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 31 ways as a sum of consecutive naturals, for example, 186684283 + ... + 186687749.

Almost surely, 2^647240417472 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 647240417472, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (960009540480).

647240417472 is an abundant number, since it is smaller than the sum of its proper divisors (1272778663488).

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

647240417472 is a wasteful number, since it uses less digits than its factorization.

647240417472 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5919 (or 5909 counting only the distinct ones).

The product of its (nonzero) digits is 2107392, while the sum is 48.

The spelling of 647240417472 in words is "six hundred forty-seven billion, two hundred forty million, four hundred seventeen thousand, four hundred seventy-two".