647631065088 has 780 divisors, whose sum is σ = 2271539652928. Its totient is φ = 184354652160.

The previous prime is 647631065077. The next prime is 647631065099. The reversal of 647631065088 is 880560136746.

647631065088 is a `hidden beast` number, since 6 + 476 + 31 + 0 + 65 + 0 + 88 = 666.

It is an interprime number because it is at equal distance from previous prime (647631065077) and next prime (647631065099).

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 59 ways as a sum of consecutive naturals, for example, 2389782393 + ... + 2389782663.

Almost surely, 2^647631065088 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 647631065088, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1135769826464).

647631065088 is an abundant number, since it is smaller than the sum of its proper divisors (1623908587840).

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

647631065088 is an frugal number, since it uses more digits than its factorization.

647631065088 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 338 (or 283 counting only the distinct ones).

The product of its (nonzero) digits is 5806080, while the sum is 54.

The spelling of 647631065088 in words is "six hundred forty-seven billion, six hundred thirty-one million, sixty-five thousand, eighty-eight".