698889 has 4 divisors (see below), whose sum is σ = 931856. Its totient is φ = 465924.

The previous prime is 698849. The next prime is 698891. The reversal of 698889 is 988896.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a de Polignac number, because none of the positive numbers 2^k-698889 is a prime.

It is a D-number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (698849) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 116479 + ... + 116484.

It is an arithmetic number, because the mean of its divisors is an integer number (232964).

2⁶⁹⁸⁸⁸⁹ is an apocalyptic number.

It is an amenable number.

698889 is a deficient number, since it is larger than the sum of its proper divisors (232967).

698889 is a wasteful number, since it uses less digits than its factorization.

698889 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 232966.

The product of its digits is 248832, while the sum is 48.

The square root of 698889 is about 835.9958133866. The cubic root of 698889 is about 88.7434009508.

The spelling of 698889 in words is "six hundred ninety-eight thousand, eight hundred eighty-nine".