6868404408 has 128 divisors (see below), whose sum is σ = 18024145920. Its totient is φ = 2179207680.

The previous prime is 6868404401. The next prime is 6868404451. The reversal of 6868404408 is 8044048686.

It is a super-2 number, since 2×6868404408² = 94349958223667660928, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6868404401) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 7831266 + ... + 7832142.

It is an arithmetic number, because the mean of its divisors is an integer number (140813640).

Almost surely, 2^6868404408 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6868404408, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9012072960).

6868404408 is an abundant number, since it is smaller than the sum of its proper divisors (11155741512).

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

6868404408 is a wasteful number, since it uses less digits than its factorization.

6868404408 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1117 (or 1113 counting only the distinct ones).

The product of its (nonzero) digits is 1179648, while the sum is 48.

The square root of 6868404408 is about 82875.8372989377. The cubic root of 6868404408 is about 1900.8679698179.

The spelling of 6868404408 in words is "six billion, eight hundred sixty-eight million, four hundred four thousand, four hundred eight".