6665632016 has 40 divisors (see below), whose sum is σ = 13137831000. Its totient is φ = 3275320320.

The previous prime is 6665632013. The next prime is 6665632067. The reversal of 6665632016 is 6102365666.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 393625600 + 6272006416 = 19840^2 + 79196^2 .

It is not an unprimeable number, because it can be changed into a prime (6665632013) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1509620 + ... + 1514028.

It is an arithmetic number, because the mean of its divisors is an integer number (328445775).

Almost surely, 2^6665632016 is an apocalyptic number.

It is an amenable number.

6665632016 is a deficient number, since it is larger than the sum of its proper divisors (6472198984).

6665632016 is a wasteful number, since it uses less digits than its factorization.

6665632016 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6027 (or 6021 counting only the distinct ones).

The product of its (nonzero) digits is 233280, while the sum is 41.

The square root of 6665632016 is about 81643.3219314354. The cubic root of 6665632016 is about 1881.9746883693.

The spelling of 6665632016 in words is "six billion, six hundred sixty-five million, six hundred thirty-two thousand, sixteen".