6649022160 has 400 divisors, whose sum is σ = 26119846080. Its totient is φ = 1541802240.

The previous prime is 6649022147. The next prime is 6649022209. The reversal of 6649022160 is 612209466.

6649022160 is a `hidden beast` number, since 6 + 6 + 490 + 2 + 2 + 160 = 666.

It is a super-3 number, since 3×6649022160³ (a number of 30 digits) contains 333 as substring.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 289087909 + ... + 289087931.

Almost surely, 2^6649022160 is an apocalyptic number.

6649022160 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 6649022160, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13059923040).

6649022160 is an abundant number, since it is smaller than the sum of its proper divisors (19470823920).

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

6649022160 is an equidigital number, since it uses as much as digits as its factorization.

6649022160 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 125 (or 44 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 36.

The square root of 6649022160 is about 81541.5364093662. The cubic root of 6649022160 is about 1880.4101790986.

The spelling of 6649022160 in words is "six billion, six hundred forty-nine million, twenty-two thousand, one hundred sixty".