598665 has 16 divisors (see below), whose sum is σ = 969408. Its totient is φ = 315456.

The previous prime is 598657. The next prime is 598669. The reversal of 598665 is 566895.

It is not a de Polignac number, because 598665 - 2³ = 598657 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (598669) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 1419 + ... + 1791.

It is an arithmetic number, because the mean of its divisors is an integer number (60588).

2⁵⁹⁸⁶⁶⁵ is an apocalyptic number.

It is an amenable number.

598665 is a deficient number, since it is larger than the sum of its proper divisors (370743).

598665 is a wasteful number, since it uses less digits than its factorization.

598665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 488.

The product of its digits is 64800, while the sum is 39.

The square root of 598665 is about 773.7344505707. The cubic root of 598665 is about 84.2806654887.

The spelling of 598665 in words is "five hundred ninety-eight thousand, six hundred sixty-five".