6626643000 has 256 divisors, whose sum is σ = 21398307840. Its totient is φ = 1706432000.

The previous prime is 6626642933. The next prime is 6626643029. The reversal of 6626643000 is 3466266.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 11288707 + ... + 11289293.

It is an arithmetic number, because the mean of its divisors is an integer number (83587140).

Almost surely, 2^6626643000 is an apocalyptic number.

6626643000 is a gapful number since it is divisible by the number (60) 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 6626643000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10699153920).

6626643000 is an abundant number, since it is smaller than the sum of its proper divisors (14771664840).

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

6626643000 is a wasteful number, since it uses less digits than its factorization.

6626643000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 735 (or 721 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 33.

The square root of 6626643000 is about 81404.1952235878. The cubic root of 6626643000 is about 1878.2981240887.

The spelling of 6626643000 in words is "six billion, six hundred twenty-six million, six hundred forty-three thousand".