8611681444 has 12 divisors (see below), whose sum is σ = 15075220300. Its totient is φ = 4304475648.

The previous prime is 8611681427. The next prime is 8611681469. The reversal of 8611681444 is 4441861168.

It can be written as a sum of positive squares in 2 ways, for example, as 5283545344 + 3328136100 = 72688^2 + 57690^2 .

It is a super-2 number, since 2×8611681444² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 8611681444.

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 3 ways as a sum of consecutive naturals, for example, 327009 + ... + 352360.

Almost surely, 2^8611681444 is an apocalyptic number.

It is an amenable number.

8611681444 is a deficient number, since it is larger than the sum of its proper divisors (6463538856).

8611681444 is a wasteful number, since it uses less digits than its factorization.

8611681444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 682542 (or 682540 counting only the distinct ones).

The product of its digits is 147456, while the sum is 43.

The square root of 8611681444 is about 92799.1457072747. The cubic root of 8611681444 is about 2049.7268280856.

The spelling of 8611681444 in words is "eight billion, six hundred eleven million, six hundred eighty-one thousand, four hundred forty-four".