6666730400 has 72 divisors (see below), whose sum is σ = 17754738624. Its totient is φ = 2424262400.

The previous prime is 6666730391. The next prime is 6666730403. The reversal of 6666730400 is 40376666.

It is not an unprimeable number, because it can be changed into a prime (6666730403) 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, 369992 + ... + 387591.

It is an arithmetic number, because the mean of its divisors is an integer number (246593592).

Almost surely, 2^6666730400 is an apocalyptic number.

It is an amenable number.

6666730400 is an abundant number, since it is smaller than the sum of its proper divisors (11088008224).

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

6666730400 is a wasteful number, since it uses less digits than its factorization.

6666730400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 757614 (or 757601 counting only the distinct ones).

The product of its (nonzero) digits is 108864, while the sum is 38.

The square root of 6666730400 is about 81650.0483772055. The cubic root of 6666730400 is about 1882.0780552792.

The spelling of 6666730400 in words is "six billion, six hundred sixty-six million, seven hundred thirty thousand, four hundred".