6649074432 has 864 divisors, whose sum is σ = 27279060480. Its totient is φ = 1542758400.

The previous prime is 6649074431. The next prime is 6649074451. The reversal of 6649074432 is 2344709466.

It is a happy number.

6649074432 is a `hidden beast` number, since 6 + 64 + 90 + 74 + 432 = 666.

It is a tau number, because it is divible by the number of its divisors (864).

It is a super-2 number, since 2×6649074432² = 88420381604552245248, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6649074431) by changing a digit.

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 95 ways as a sum of consecutive naturals, for example, 214486257 + ... + 214486287.

Almost surely, 2^6649074432 is an apocalyptic number.

6649074432 is a gapful number since it is divisible by the number (62) 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 6649074432, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13639530240).

6649074432 is an abundant number, since it is smaller than the sum of its proper divisors (20629986048).

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

6649074432 is a wasteful number, since it uses less digits than its factorization.

6649074432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 118 (or 67 counting only the distinct ones).

The product of its (nonzero) digits is 870912, while the sum is 45.

The square root of 6649074432 is about 81541.8569324982. The cubic root of 6649074432 is about 1880.4151067677.

The spelling of 6649074432 in words is "six billion, six hundred forty-nine million, seventy-four thousand, four hundred thirty-two".