666670276800 has 1008 divisors, whose sum is σ = 2690486083584. Its totient is φ = 155105280000.

The previous prime is 666670276787. The next prime is 666670276837. The reversal of 666670276800 is 8672076666.

It is an unprimeable number.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 672724305 + ... + 672725295.

Almost surely, 2^666670276800 is an apocalyptic number.

666670276800 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 666670276800, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1345243041792).

666670276800 is an abundant number, since it is smaller than the sum of its proper divisors (2023815806784).

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

666670276800 is a wasteful number, since it uses less digits than its factorization.

666670276800 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1198 (or 1180 counting only the distinct ones).

The product of its (nonzero) digits is 6096384, while the sum is 54.

The spelling of 666670276800 in words is "six hundred sixty-six billion, six hundred seventy million, two hundred seventy-six thousand, eight hundred".