605680 has 40 divisors (see below), whose sum is σ = 1441872. Its totient is φ = 236544.

The previous prime is 605641. The next prime is 605687. The reversal of 605680 is 86506.

It is a tau number, because it is divible by the number of its divisors (40).

It is a hoax number, since the sum of its digits (25) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (605687) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5304 + ... + 5416.

2⁶⁰⁵⁶⁸⁰ is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 605680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (720936).

605680 is an abundant number, since it is smaller than the sum of its proper divisors (836192).

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

605680 is a wasteful number, since it uses less digits than its factorization.

605680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 193 (or 187 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 25.

The square root of 605680 is about 778.2544571026. The cubic root of 605680 is about 84.6085809321.

The spelling of 605680 in words is "six hundred five thousand, six hundred eighty".