6550615644 has 24 divisors (see below), whose sum is σ = 16183874448. Its totient is φ = 2055095040.

The previous prime is 6550615637. The next prime is 6550615667. The reversal of 6550615644 is 4465160556.

It is a junction number, because it is equal to n+sod(n) for n = 6550615596 and 6550615605.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 16055227 + ... + 16055634.

It is an arithmetic number, because the mean of its divisors is an integer number (674328102).

Almost surely, 2^6550615644 is an apocalyptic number.

It is an amenable number.

6550615644 is an abundant number, since it is smaller than the sum of its proper divisors (9633258804).

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

6550615644 is a wasteful number, since it uses less digits than its factorization.

6550615644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32110885 (or 32110883 counting only the distinct ones).

The product of its (nonzero) digits is 432000, while the sum is 42.

The square root of 6550615644 is about 80935.8736531583. The cubic root of 6550615644 is about 1871.0872497609.

The spelling of 6550615644 in words is "six billion, five hundred fifty million, six hundred fifteen thousand, six hundred forty-four".