698998 has 4 divisors (see below), whose sum is σ = 1048500. Its totient is φ = 349498.

The previous prime is 698983. The next prime is 699001. The reversal of 698998 is 899896.

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

It is a nialpdrome in base 16.

It is a congruent number.

It is an unprimeable 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, 174748 + ... + 174751.

It is an arithmetic number, because the mean of its divisors is an integer number (262125).

2⁶⁹⁸⁹⁹⁸ is an apocalyptic number.

698998 is a deficient number, since it is larger than the sum of its proper divisors (349502).

698998 is a wasteful number, since it uses less digits than its factorization.

698998 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 349501.

The product of its digits is 279936, while the sum is 49.

The square root of 698998 is about 836.0610025590. The cubic root of 698998 is about 88.7480142384.

The spelling of 698998 in words is "six hundred ninety-eight thousand, nine hundred ninety-eight".