6889237665 has 16 divisors (see below), whose sum is σ = 11120329728. Its totient is φ = 3641743616.

The previous prime is 6889237661. The next prime is 6889237697. The reversal of 6889237665 is 5667329886.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 6889237665 - 2² = 6889237661 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 6889237599 and 6889237608.

It is not an unprimeable number, because it can be changed into a prime (6889237661) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2030529 + ... + 2033918.

It is an arithmetic number, because the mean of its divisors is an integer number (695020608).

Almost surely, 2^6889237665 is an apocalyptic number.

It is an amenable number.

6889237665 is a deficient number, since it is larger than the sum of its proper divisors (4231092063).

6889237665 is a wasteful number, since it uses less digits than its factorization.

6889237665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4064568.

The product of its digits is 26127360, while the sum is 60.

The square root of 6889237665 is about 83001.4317045194. The cubic root of 6889237665 is about 1902.7879353283.

The spelling of 6889237665 in words is "six billion, eight hundred eighty-nine million, two hundred thirty-seven thousand, six hundred sixty-five".