6666912000 has 432 divisors, whose sum is σ = 27424854912. Its totient is φ = 1523404800.

The previous prime is 6666911963. The next prime is 6666912001. The reversal of 6666912000 is 2196666.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (6666912001) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2014347 + ... + 2017653.

Almost surely, 2^6666912000 is an apocalyptic number.

6666912000 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6666912000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13712427456).

6666912000 is an abundant number, since it is smaller than the sum of its proper divisors (20757942912).

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

6666912000 is a wasteful number, since it uses less digits than its factorization.

6666912000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3351 (or 3324 counting only the distinct ones).

The product of its (nonzero) digits is 23328, while the sum is 36.

The square root of 6666912000 is about 81651.1604326601. The cubic root of 6666912000 is about 1882.0951442294.

The spelling of 6666912000 in words is "six billion, six hundred sixty-six million, nine hundred twelve thousand".