6661093800 has 96 divisors (see below), whose sum is σ = 21088828800. Its totient is φ = 1738490880.

The previous prime is 6661093717. The next prime is 6661093811. The reversal of 6661093800 is 83901666.

6661093800 = T₃₅ + T₃₆ + ... + T₃₄₁₈.

It is a happy number.

It is a super-2 number, since 2×6661093800² = 88740341224796880000, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 89905 + ... + 146304.

It is an arithmetic number, because the mean of its divisors is an integer number (219675300).

Almost surely, 2^6661093800 is an apocalyptic number.

6661093800 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

6661093800 is an abundant number, since it is smaller than the sum of its proper divisors (14427735000).

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

6661093800 is a wasteful number, since it uses less digits than its factorization.

6661093800 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 236275 (or 236266 counting only the distinct ones).

The product of its (nonzero) digits is 46656, while the sum is 39.

The square root of 6661093800 is about 81615.5242585625. The cubic root of 6661093800 is about 1881.5474847344.

The spelling of 6661093800 in words is "six billion, six hundred sixty-one million, ninety-three thousand, eight hundred".