647722303488 has 810 divisors, whose sum is σ = 2211564963069. Its totient is φ = 188809740288.

The previous prime is 647722303433. The next prime is 647722303531. The reversal of 647722303488 is 884303227746.

It is a happy number.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

647722303488 is a `hidden beast` number, since 6 + 4 + 77 + 223 + 0 + 348 + 8 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 553821732864 + 93900570624 = 744192^2 + 306432^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=569088.

It is a super-2 number, since 2×647722303488² (a number of 24 digits) contains 22 as substring.

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

It is an unprimeable number.

It is a polite number, since it can be written in 44 ways as a sum of consecutive naturals, for example, 34090647543 + ... + 34090647561.

Almost surely, 2^647722303488 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 647722303488

647722303488 is an abundant number, since it is smaller than the sum of its proper divisors (1563842659581).

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

647722303488 is an frugal number, since it uses more digits than its factorization.

647722303488 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 110 (or 37 counting only the distinct ones).

The product of its (nonzero) digits is 10838016, while the sum is 54.

The spelling of 647722303488 in words is "six hundred forty-seven billion, seven hundred twenty-two million, three hundred three thousand, four hundred eighty-eight".