698135 has 4 divisors (see below), whose sum is σ = 837768. Its totient is φ = 558504.

The previous prime is 698111. The next prime is 698171. The reversal of 698135 is 531896.

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

It is a cyclic number.

It is not a de Polignac number, because 698135 - 2¹⁰ = 697111 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 698135.

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 in 3 ways as a sum of consecutive naturals, for example, 69809 + ... + 69818.

It is an arithmetic number, because the mean of its divisors is an integer number (209442).

2⁶⁹⁸¹³⁵ is an apocalyptic number.

698135 is a deficient number, since it is larger than the sum of its proper divisors (139633).

698135 is a wasteful number, since it uses less digits than its factorization.

698135 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 139632.

The product of its digits is 6480, while the sum is 32.

The square root of 698135 is about 835.5447324949. The cubic root of 698135 is about 88.7114757087.

The spelling of 698135 in words is "six hundred ninety-eight thousand, one hundred thirty-five".