6650437428 has 36 divisors (see below), whose sum is σ = 16817364928. Its totient is φ = 2215950480.

The previous prime is 6650437427. The next prime is 6650437433. The reversal of 6650437428 is 8247340566.

It is a tau number, because it is divible by the number of its divisors (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6650437427) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 61575 + ... + 130737.

Almost surely, 2^6650437428 is an apocalyptic number.

It is an amenable number.

6650437428 is an abundant number, since it is smaller than the sum of its proper divisors (10166927500).

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

6650437428 is a wasteful number, since it uses less digits than its factorization.

6650437428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71844 (or 71839 counting only the distinct ones).

The product of its (nonzero) digits is 967680, while the sum is 45.

The square root of 6650437428 is about 81550.2141505465. The cubic root of 6650437428 is about 1880.5435869637.

The spelling of 6650437428 in words is "six billion, six hundred fifty million, four hundred thirty-seven thousand, four hundred twenty-eight".