207680 has 56 divisors (see below), whose sum is σ = 548640. Its totient is φ = 74240.

The previous prime is 207679. The next prime is 207709. The reversal of 207680 is 86702.

It is a hoax number, since the sum of its digits (23) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3491 + ... + 3549.

2²⁰⁷⁶⁸⁰ is an apocalyptic number.

207680 is a gapful number since it is divisible by the number (20) 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 207680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (274320).

207680 is an abundant number, since it is smaller than the sum of its proper divisors (340960).

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

207680 is a wasteful number, since it uses less digits than its factorization.

207680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87 (or 77 counting only the distinct ones).

The product of its (nonzero) digits is 672, while the sum is 23.

The square root of 207680 is about 455.7192117960. The cubic root of 207680 is about 59.2195211979.

The spelling of 207680 in words is "two hundred seven thousand, six hundred eighty".