6689055690623 has 8 divisors (see below), whose sum is σ = 6702415994880. Its totient is φ = 6675708494200.

The previous prime is 6689055690619. The next prime is 6689055690643. The reversal of 6689055690623 is 3260965509866.

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 6689055690623 - 2² = 6689055690619 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 6689055690623.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6689055690613) 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, 2255003 + ... + 4296876.

It is an arithmetic number, because the mean of its divisors is an integer number (837801999360).

Almost surely, 2^{6689055690623} is an apocalyptic number.

6689055690623 is a deficient number, since it is larger than the sum of its proper divisors (13360304257).

6689055690623 is a wasteful number, since it uses less digits than its factorization.

6689055690623 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6553917.

The product of its (nonzero) digits is 125971200, while the sum is 65.

The spelling of 6689055690623 in words is "six trillion, six hundred eighty-nine billion, fifty-five million, six hundred ninety thousand, six hundred twenty-three".