698436 has 48 divisors (see below), whose sum is σ = 1881600. Its totient is φ = 223776.

The previous prime is 698419. The next prime is 698437. The reversal of 698436 is 634896.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a nialpdrome in base 16.

It is a self number, because there is not a number n which added to its sum of digits gives 698436.

It is a congruent number.

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

698436 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3021 + ... + 3243.

It is an arithmetic number, because the mean of its divisors is an integer number (39200).

2⁶⁹⁸⁴³⁶ is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 698436, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (940800).

698436 is an abundant number, since it is smaller than the sum of its proper divisors (1183164).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

698436 is a wasteful number, since it uses less digits than its factorization.

698436 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 265 (or 257 counting only the distinct ones).

The product of its digits is 31104, while the sum is 36.

The square root of 698436 is about 835.7248350983. The cubic root of 698436 is about 88.7242231561.

The spelling of 698436 in words is "six hundred ninety-eight thousand, four hundred thirty-six".