6689366961 has 8 divisors (see below), whose sum is σ = 9206870784. Its totient is φ = 4315720560.

The previous prime is 6689366927. The next prime is 6689367007. The reversal of 6689366961 is 1696639866.

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

It is not a de Polignac number, because 6689366961 - 2⁹ = 6689366449 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 6689366895 and 6689366904.

It is not an unprimeable number, because it can be changed into a prime (6689366911) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 35964246 + ... + 35964431.

It is an arithmetic number, because the mean of its divisors is an integer number (1150858848).

Almost surely, 2^6689366961 is an apocalyptic number.

It is an amenable number.

6689366961 is a deficient number, since it is larger than the sum of its proper divisors (2517503823).

6689366961 is a wasteful number, since it uses less digits than its factorization.

6689366961 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71928711.

The product of its digits is 15116544, while the sum is 60.

The square root of 6689366961 is about 81788.5503050396. The cubic root of 6689366961 is about 1884.2058172265.

The spelling of 6689366961 in words is "six billion, six hundred eighty-nine million, three hundred sixty-six thousand, nine hundred sixty-one".