605998 has 4 divisors (see below), whose sum is σ = 909000. Its totient is φ = 302998.

The previous prime is 605993. The next prime is 606017. The reversal of 605998 is 899506.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (605993) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 151498 + ... + 151501.

It is an arithmetic number, because the mean of its divisors is an integer number (227250).

2⁶⁰⁵⁹⁹⁸ is an apocalyptic number.

605998 is a deficient number, since it is larger than the sum of its proper divisors (303002).

605998 is a wasteful number, since it uses less digits than its factorization.

605998 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 303001.

The product of its (nonzero) digits is 19440, while the sum is 37.

The square root of 605998 is about 778.4587336526. The cubic root of 605998 is about 84.6233856812.

The spelling of 605998 in words is "six hundred five thousand, nine hundred ninety-eight".