6655602689 has 8 divisors (see below), whose sum is σ = 6930707520. Its totient is φ = 6383538000.

The previous prime is 6655602671. The next prime is 6655602719. The reversal of 6655602689 is 9862065566.

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

It is not a de Polignac number, because 6655602689 - 2⁸ = 6655602433 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 6655602689.

It is not an unprimeable number, because it can be changed into a prime (6655602659) 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, 755567 + ... + 764324.

It is an arithmetic number, because the mean of its divisors is an integer number (866338440).

Almost surely, 2^6655602689 is an apocalyptic number.

It is an amenable number.

6655602689 is a deficient number, since it is larger than the sum of its proper divisors (275104831).

6655602689 is a wasteful number, since it uses less digits than its factorization.

6655602689 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1520071.

The product of its (nonzero) digits is 4665600, while the sum is 53.

The square root of 6655602689 is about 81581.8772093410. The cubic root of 6655602689 is about 1881.0303211011.

The spelling of 6655602689 in words is "six billion, six hundred fifty-five million, six hundred two thousand, six hundred eighty-nine".