698831 has 4 divisors (see below), whose sum is σ = 798672. Its totient is φ = 598992.

The previous prime is 698827. The next prime is 698849. The reversal of 698831 is 138896.

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 698831 - 2² = 698827 is a prime.

It is a super-2 number, since 2×698831² = 976729533122, which contains 22 as substring.

It is a zygodrome in base 6.

It is a junction number, because it is equal to n+sod(n) for n = 698791 and 698800.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (698821) 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, 49910 + ... + 49923.

It is an arithmetic number, because the mean of its divisors is an integer number (199668).

2⁶⁹⁸⁸³¹ is an apocalyptic number.

698831 is a deficient number, since it is larger than the sum of its proper divisors (99841).

698831 is an equidigital number, since it uses as much as digits as its factorization.

698831 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 99840.

The product of its digits is 10368, while the sum is 35.

The square root of 698831 is about 835.9611234980. The cubic root of 698831 is about 88.7409459784.

The spelling of 698831 in words is "six hundred ninety-eight thousand, eight hundred thirty-one".