207966668 has 72 divisors (see below), whose sum is σ = 457470720. Its totient is φ = 80982720.

The previous prime is 207966653. The next prime is 207966673. The reversal of 207966668 is 866669702.

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, 335663 + ... + 336281.

It is an arithmetic number, because the mean of its divisors is an integer number (6353760).

Almost surely, 2^207966668 is an apocalyptic number.

207966668 is a gapful number since it is divisible by the number (28) 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 207966668, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (228735360).

207966668 is an abundant number, since it is smaller than the sum of its proper divisors (249504052).

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

207966668 is a wasteful number, since it uses less digits than its factorization.

207966668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 727 (or 712 counting only the distinct ones).

The product of its (nonzero) digits is 1306368, while the sum is 50.

The square root of 207966668 is about 14421.0494763731. The cubic root of 207966668 is about 592.4675626577.

The spelling of 207966668 in words is "two hundred seven million, nine hundred sixty-six thousand, six hundred sixty-eight".