698239 has 2 divisors, whose sum is σ = 698240. Its totient is φ = 698238.

The previous prime is 698183. The next prime is 698249. The reversal of 698239 is 932896.

698239 is nontrivially palindromic in base 9.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 698239 - 2⁷ = 698111 is a prime.

It is a super-2 number, since 2×698239² = 975075402242, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 698198 and 698207.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (698249) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 349119 + 349120.

It is an arithmetic number, because the mean of its divisors is an integer number (349120).

2⁶⁹⁸²³⁹ is an apocalyptic number.

698239 is a deficient number, since it is larger than the sum of its proper divisors (1).

698239 is an equidigital number, since it uses as much as digits as its factorization.

698239 is an evil number, because the sum of its binary digits is even.

The product of its digits is 23328, while the sum is 37.

The square root of 698239 is about 835.6069650260. The cubic root of 698239 is about 88.7158805565.

It can be divided in two parts, 6982 and 39, that added together give a triangular number (7021 = T₁₁₈).

The spelling of 698239 in words is "six hundred ninety-eight thousand, two hundred thirty-nine".