6685890168589 has 4 divisors (see below), whose sum is σ = 6686863234720. Its totient is φ = 6684917102460.

The previous prime is 6685890168577. The next prime is 6685890168599. The reversal of 6685890168589 is 9858610985866.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 6685890168589 - 2⁵ = 6685890168557 is a prime.

It is a super-2 number, since 2×6685890168589² (a number of 26 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6685890168599) 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, 486522759 + ... + 486536500.

It is an arithmetic number, because the mean of its divisors is an integer number (1671715808680).

Almost surely, 2^{6685890168589} is an apocalyptic number.

It is an amenable number.

6685890168589 is a deficient number, since it is larger than the sum of its proper divisors (973066131).

6685890168589 is an equidigital number, since it uses as much as digits as its factorization.

6685890168589 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 973066130.

The product of its (nonzero) digits is 1791590400, while the sum is 79.

The spelling of 6685890168589 in words is "six trillion, six hundred eighty-five billion, eight hundred ninety million, one hundred sixty-eight thousand, five hundred eighty-nine".