6689820852 has 72 divisors (see below), whose sum is σ = 19866756000. Its totient is φ = 1871277120.

The previous prime is 6689820793. The next prime is 6689820857. The reversal of 6689820852 is 2580289866.

It is a hoax number, since the sum of its digits (54) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6689820857) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 644602 + ... + 654897.

Almost surely, 2^6689820852 is an apocalyptic number.

It is an amenable number.

6689820852 is an abundant number, since it is smaller than the sum of its proper divisors (13176935148).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6689820852 is a wasteful number, since it uses less digits than its factorization.

6689820852 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1299533 (or 1299528 counting only the distinct ones).

The product of its (nonzero) digits is 3317760, while the sum is 54.

The square root of 6689820852 is about 81791.3250412292. The cubic root of 6689820852 is about 1884.2484323561.

It can be divided in two parts, 6689 and 820852, that added together give a triangular number (827541 = T₁₂₈₆).

The spelling of 6689820852 in words is "six billion, six hundred eighty-nine million, eight hundred twenty thousand, eight hundred fifty-two".