5661879752 has 8 divisors (see below), whose sum is σ = 10616024550. Its totient is φ = 2830939872.

The previous prime is 5661879721. The next prime is 5661879763. The reversal of 5661879752 is 2579781665.

It can be written as a sum of positive squares in only one way, i.e., 3839785156 + 1822094596 = 61966^2 + 42686^2 .

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

It is a super-2 number, since 2×5661879752² = 64113764652215163008, which contains 22 as substring.

It is an unprimeable number.

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, 353867477 + ... + 353867492.

Almost surely, 2^5661879752 is an apocalyptic number.

It is an amenable number.

5661879752 is a deficient number, since it is larger than the sum of its proper divisors (4954144798).

5661879752 is a wasteful number, since it uses less digits than its factorization.

5661879752 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 707734975 (or 707734971 counting only the distinct ones).

The product of its digits is 6350400, while the sum is 56.

The square root of 5661879752 is about 75245.4633316853. The cubic root of 5661879752 is about 1782.3249248057.

The spelling of 5661879752 in words is "five billion, six hundred sixty-one million, eight hundred seventy-nine thousand, seven hundred fifty-two".