6608226681 has 63 divisors (see below), whose sum is σ = 11278819461. Its totient is φ = 3728330424.

The previous prime is 6608226659. The next prime is 6608226721. The reversal of 6608226681 is 1866228066.

The square root of 6608226681 is 81291.

It is a perfect power (a square), and thus also a powerful number.

It is a tau number, because it is divible by the number of its divisors (63).

It is a de Polignac number, because none of the positive numbers 2^k-6608226681 is a prime.

It is a super-3 number, since 3×6608226681³ (a number of 30 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is not an unprimeable number, because it can be changed into a prime (6608226641) by changing a digit.

It is a polite number, since it can be written in 62 ways as a sum of consecutive naturals, for example, 83648400 + ... + 83648478.

Almost surely, 2^6608226681 is an apocalyptic number.

6608226681 is the 81291-st square number.

6608226681 is the 40646-th centered octagonal number.

It is an amenable number.

6608226681 is a deficient number, since it is larger than the sum of its proper divisors (4670592780).

6608226681 is an frugal number, since it uses more digits than its factorization.

6608226681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 206 (or 89 counting only the distinct ones).

The product of its (nonzero) digits is 331776, while the sum is 45.

The cubic root of 6608226681 is about 1876.5564965590.

It can be divided in two parts, 6608 and 226681, that added together give a square (233289 = 483²).

The spelling of 6608226681 in words is "six billion, six hundred eight million, two hundred twenty-six thousand, six hundred eighty-one".