6622165440 has 504 divisors, whose sum is σ = 25886200704. Its totient is φ = 1551052800.

The previous prime is 6622165357. The next prime is 6622165447. The reversal of 6622165440 is 445612266.

It is a super-2 number, since 2×6622165440² = 87706150229460787200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 6622165395 and 6622165404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6622165447) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 10802574 + ... + 10803186.

Almost surely, 2^6622165440 is an apocalyptic number.

6622165440 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 6622165440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12943100352).

6622165440 is an abundant number, since it is smaller than the sum of its proper divisors (19264035264).

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

6622165440 is a wasteful number, since it uses less digits than its factorization.

6622165440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 689 (or 665 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 36.

The square root of 6622165440 is about 81376.6885539096. The cubic root of 6622165440 is about 1877.8749793436.

The spelling of 6622165440 in words is "six billion, six hundred twenty-two million, one hundred sixty-five thousand, four hundred forty".