6685109323 has 4 divisors (see below), whose sum is σ = 6769731040. Its totient is φ = 6600487608.

The previous prime is 6685109287. The next prime is 6685109329. The reversal of 6685109323 is 3239015866.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6685109323 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 6685109323.

It is not an unprimeable number, because it can be changed into a prime (6685109329) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 42310740 + ... + 42310897.

It is an arithmetic number, because the mean of its divisors is an integer number (1692432760).

Almost surely, 2^6685109323 is an apocalyptic number.

6685109323 is a deficient number, since it is larger than the sum of its proper divisors (84621717).

6685109323 is an equidigital number, since it uses as much as digits as its factorization.

6685109323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84621716.

The product of its (nonzero) digits is 233280, while the sum is 43.

The square root of 6685109323 is about 81762.5178367203. The cubic root of 6685109323 is about 1883.8059802446.

The spelling of 6685109323 in words is "six billion, six hundred eighty-five million, one hundred nine thousand, three hundred twenty-three".