698798 has 4 divisors (see below), whose sum is σ = 1048200. Its totient is φ = 349398.

The previous prime is 698779. The next prime is 698821. The reversal of 698798 is 897896.

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

It is a congruent number.

It is an unprimeable number.

698798 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

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 as a sum of consecutive naturals, namely, 174698 + ... + 174701.

It is an arithmetic number, because the mean of its divisors is an integer number (262050).

2⁶⁹⁸⁷⁹⁸ is an apocalyptic number.

698798 is a deficient number, since it is larger than the sum of its proper divisors (349402).

698798 is a wasteful number, since it uses less digits than its factorization.

698798 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 349401.

The product of its digits is 217728, while the sum is 47.

The square root of 698798 is about 835.9413855050. The cubic root of 698798 is about 88.7395491232.

The spelling of 698798 in words is "six hundred ninety-eight thousand, seven hundred ninety-eight".