6655555904 has 112 divisors (see below), whose sum is σ = 14232453120. Its totient is φ = 3078673920.

The previous prime is 6655555901. The next prime is 6655555957. The reversal of 6655555904 is 4095555566.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6655555901) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10964369 + ... + 10964975.

Almost surely, 2^6655555904 is an apocalyptic number.

6655555904 is a gapful number since it is divisible by the number (64) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6655555904, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7116226560).

6655555904 is an abundant number, since it is smaller than the sum of its proper divisors (7576897216).

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

6655555904 is a wasteful number, since it uses less digits than its factorization.

6655555904 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 836 (or 826 counting only the distinct ones).

The product of its (nonzero) digits is 4050000, while the sum is 50.

The square root of 6655555904 is about 81581.5904723609. The cubic root of 6655555904 is about 1881.0259135759.

The spelling of 6655555904 in words is "six billion, six hundred fifty-five million, five hundred fifty-five thousand, nine hundred four".