207688768 has 56 divisors (see below), whose sum is σ = 479950272. Its totient is φ = 87320064.

The previous prime is 207688763. The next prime is 207688769. The reversal of 207688768 is 867886702.

It is a tau number, because it is divible by the number of its divisors (56).

It is not an unprimeable number, because it can be changed into a prime (207688763) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19371 + ... + 28117.

Almost surely, 2^207688768 is an apocalyptic number.

207688768 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 207688768, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (239975136).

207688768 is an abundant number, since it is smaller than the sum of its proper divisors (272261504).

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

207688768 is an equidigital number, since it uses as much as digits as its factorization.

207688768 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8819 (or 8809 counting only the distinct ones).

The product of its (nonzero) digits is 1806336, while the sum is 52.

The square root of 207688768 is about 14411.4110343158. The cubic root of 207688768 is about 592.2035457853.

The spelling of 207688768 in words is "two hundred seven million, six hundred eighty-eight thousand, seven hundred sixty-eight".