605890 has 8 divisors (see below), whose sum is σ = 1090620. Its totient is φ = 242352.

The previous prime is 605887. The next prime is 605893. The reversal of 605890 is 98506.

605890 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (605887) and next prime (605893).

It can be written as a sum of positive squares in 2 ways, for example, as 594441 + 11449 = 771^2 + 107^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (605893) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 30285 + ... + 30304.

2⁶⁰⁵⁸⁹⁰ is an apocalyptic number.

605890 is a deficient number, since it is larger than the sum of its proper divisors (484730).

605890 is a wasteful number, since it uses less digits than its factorization.

605890 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60596.

The product of its (nonzero) digits is 2160, while the sum is 28.

The square root of 605890 is about 778.3893627228. The cubic root of 605890 is about 84.6183582341.

The spelling of 605890 in words is "six hundred five thousand, eight hundred ninety".