5988877661 has 8 divisors (see below), whose sum is σ = 6451170264. Its totient is φ = 5526815040.

The previous prime is 5988877639. The next prime is 5988877709. The reversal of 5988877661 is 1667788895.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 101384761 + 5887492900 = 10069^2 + 76730^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 5988877661 - 2³⁰ = 4915135837 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5988877061) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1370 + ... + 109451.

It is an arithmetic number, because the mean of its divisors is an integer number (806396283).

Almost surely, 2^5988877661 is an apocalyptic number.

It is an amenable number.

5988877661 is a deficient number, since it is larger than the sum of its proper divisors (462292603).

5988877661 is a wasteful number, since it uses less digits than its factorization.

5988877661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 114991.

The product of its digits is 40642560, while the sum is 65.

The square root of 5988877661 is about 77387.8392320137. The cubic root of 5988877661 is about 1815.9970854755.

The spelling of 5988877661 in words is "five billion, nine hundred eighty-eight million, eight hundred seventy-seven thousand, six hundred sixty-one".