5611728664 has 8 divisors (see below), whose sum is σ = 10521991260. Its totient is φ = 2805864328.

The previous prime is 5611728557. The next prime is 5611728667. The reversal of 5611728664 is 4668271165.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5611728667) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 350733034 + ... + 350733049.

Almost surely, 2^5611728664 is an apocalyptic number.

It is an amenable number.

5611728664 is a deficient number, since it is larger than the sum of its proper divisors (4910262596).

5611728664 is a wasteful number, since it uses less digits than its factorization.

5611728664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 701466089 (or 701466085 counting only the distinct ones).

The product of its digits is 483840, while the sum is 46.

The square root of 5611728664 is about 74911.4721788325. The cubic root of 5611728664 is about 1777.0468922737.

It can be divided in two parts, 561 and 1728664, that added together give a square (1729225 = 1315²).

The spelling of 5611728664 in words is "five billion, six hundred eleven million, seven hundred twenty-eight thousand, six hundred sixty-four".