647774076480 has 448 divisors, whose sum is σ = 2257925725440. Its totient is φ = 156612427776.

The previous prime is 647774076407. The next prime is 647774076491. The reversal of 647774076480 is 84670477746.

It is a super-2 number, since 2×647774076480² (a number of 24 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (60).

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 247524132 + ... + 247526748.

It is an arithmetic number, because the mean of its divisors is an integer number (5040012780).

Almost surely, 2^647774076480 is an apocalyptic number.

647774076480 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 647774076480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1128962862720).

647774076480 is an abundant number, since it is smaller than the sum of its proper divisors (1610151648960).

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

647774076480 is a wasteful number, since it uses less digits than its factorization.

647774076480 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3206 (or 3196 counting only the distinct ones).

The product of its (nonzero) digits is 44255232, while the sum is 60.

The spelling of 647774076480 in words is "six hundred forty-seven billion, seven hundred seventy-four million, seventy-six thousand, four hundred eighty".