6554336646 has 64 divisors (see below), whose sum is σ = 15420061440. Its totient is φ = 1831040640.

The previous prime is 6554336641. The next prime is 6554336669. The reversal of 6554336646 is 6466334556.

It is a junction number, because it is equal to n+sod(n) for n = 6554336595 and 6554336604.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6554336641) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 732576 + ... + 741468.

It is an arithmetic number, because the mean of its divisors is an integer number (240938460).

Almost surely, 2^6554336646 is an apocalyptic number.

6554336646 is a gapful number since it is divisible by the number (66) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 6554336646, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7710030720).

6554336646 is an abundant number, since it is smaller than the sum of its proper divisors (8865724794).

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

6554336646 is a wasteful number, since it uses less digits than its factorization.

6554336646 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9781.

The product of its digits is 4665600, while the sum is 48.

The square root of 6554336646 is about 80958.8577365071. The cubic root of 6554336646 is about 1871.4414659091.

The spelling of 6554336646 in words is "six billion, five hundred fifty-four million, three hundred thirty-six thousand, six hundred forty-six".