6626220040 has 64 divisors (see below), whose sum is σ = 16303446720. Its totient is φ = 2403744000.

The previous prime is 6626220019. The next prime is 6626220071. The reversal of 6626220040 is 400226266.

It is a junction number, because it is equal to n+sod(n) for n = 6626219990 and 6626220008.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 167355 + ... + 203125.

It is an arithmetic number, because the mean of its divisors is an integer number (254741355).

Almost surely, 2^6626220040 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 6626220040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8151723360).

6626220040 is an abundant number, since it is smaller than the sum of its proper divisors (9677226680).

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

6626220040 is a wasteful number, since it uses less digits than its factorization.

6626220040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36214 (or 36210 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 28.

The square root of 6626220040 is about 81401.5972816259. The cubic root of 6626220040 is about 1878.2581610748.

The spelling of 6626220040 in words is "six billion, six hundred twenty-six million, two hundred twenty thousand, forty".