698439 has 16 divisors (see below), whose sum is σ = 1080320. Its totient is φ = 393120.

The previous prime is 698437. The next prime is 698447. The reversal of 698439 is 934896.

It is not a de Polignac number, because 698439 - 2¹ = 698437 is a prime.

It is a Duffinian number.

698439 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 698397 and 698406.

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 698439.

It is not an unprimeable number, because it can be changed into a prime (698437) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1449 + ... + 1869.

It is an arithmetic number, because the mean of its divisors is an integer number (67520).

2⁶⁹⁸⁴³⁹ is an apocalyptic number.

698439 is a deficient number, since it is larger than the sum of its proper divisors (381881).

698439 is a wasteful number, since it uses less digits than its factorization.

698439 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 510.

The product of its digits is 46656, while the sum is 39.

The square root of 698439 is about 835.7266299455. The cubic root of 698439 is about 88.7243501886.

The spelling of 698439 in words is "six hundred ninety-eight thousand, four hundred thirty-nine".