6646001144 has 16 divisors (see below), whose sum is σ = 12696370920. Its totient is φ = 3260302240.

The previous prime is 6646001143. The next prime is 6646001147. The reversal of 6646001144 is 4411006466.

It is a self number, because there is not a number n which added to its sum of digits gives 6646001144.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6646001143) 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 3 ways as a sum of consecutive naturals, for example, 7836842 + ... + 7837689.

Almost surely, 2^6646001144 is an apocalyptic number.

It is an amenable number.

6646001144 is a deficient number, since it is larger than the sum of its proper divisors (6050369776).

6646001144 is a wasteful number, since it uses less digits than its factorization.

6646001144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15674590 (or 15674586 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 32.

The square root of 6646001144 is about 81523.0099051795. The cubic root of 6646001144 is about 1880.1253447437.

The spelling of 6646001144 in words is "six billion, six hundred forty-six million, one thousand, one hundred forty-four".