6688536965 has 48 divisors (see below), whose sum is σ = 9250416000. Its totient is φ = 4630369920.

The previous prime is 6688536949. The next prime is 6688537007. The reversal of 6688536965 is 5696358866.

It is not a de Polignac number, because 6688536965 - 2⁴ = 6688536949 is a prime.

It is a super-2 number, since 2×6688536965² = 89473053464342822450, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 6688536898 and 6688536907.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 3185486 + ... + 3187584.

It is an arithmetic number, because the mean of its divisors is an integer number (192717000).

Almost surely, 2^6688536965 is an apocalyptic number.

It is an amenable number.

6688536965 is a deficient number, since it is larger than the sum of its proper divisors (2561879035).

6688536965 is a wasteful number, since it uses less digits than its factorization.

6688536965 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2378 (or 2367 counting only the distinct ones).

The product of its digits is 55987200, while the sum is 62.

The square root of 6688536965 is about 81783.4761122319. The cubic root of 6688536965 is about 1884.1278851897.

The spelling of 6688536965 in words is "six billion, six hundred eighty-eight million, five hundred thirty-six thousand, nine hundred sixty-five".