6896804209 has 3 divisors (see below), whose sum is σ = 6896887257. Its totient is φ = 6896721162.

The previous prime is 6896804183. The next prime is 6896804227. The reversal of 6896804209 is 9024086986.

The square root of 6896804209 is 83047.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is not a de Polignac number, because 6896804209 - 2¹¹ = 6896802161 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6896804279) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 41524 + ... + 124570.

It is an arithmetic number, because the mean of its divisors is an integer number (2298962419).

Almost surely, 2^6896804209 is an apocalyptic number.

6896804209 is the 83047-th square number.

6896804209 is the 41524-th centered octagonal number.

It is an amenable number.

6896804209 is a deficient number, since it is larger than the sum of its proper divisors (83048).

6896804209 is an frugal number, since it uses more digits than its factorization.

6896804209 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 166094 (or 83047 counting only the distinct ones).

The product of its (nonzero) digits is 1492992, while the sum is 52.

The cubic root of 6896804209 is about 1903.4842997906.

It can be divided in two parts, 689680 and 4209, that added together give a square (693889 = 833²).

The spelling of 6896804209 in words is "six billion, eight hundred ninety-six million, eight hundred four thousand, two hundred nine".