659798 has 4 divisors (see below), whose sum is σ = 989700. Its totient is φ = 329898.

The previous prime is 659783. The next prime is 659819. The reversal of 659798 is 897956.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 164948 + ... + 164951.

It is an arithmetic number, because the mean of its divisors is an integer number (247425).

2⁶⁵⁹⁷⁹⁸ is an apocalyptic number.

659798 is a deficient number, since it is larger than the sum of its proper divisors (329902).

659798 is a wasteful number, since it uses less digits than its factorization.

659798 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 329901.

The product of its digits is 136080, while the sum is 44.

The square root of 659798 is about 812.2795085437. The cubic root of 659798 is about 87.0569935270.

The spelling of 659798 in words is "six hundred fifty-nine thousand, seven hundred ninety-eight".