698256 has 60 divisors (see below), whose sum is σ = 2110108. Its totient is φ = 214272.

The previous prime is 698251. The next prime is 698261. The reversal of 698256 is 652896.

It is an interprime number because it is at equal distance from previous prime (698251) and next prime (698261).

It can be written as a sum of positive squares in 2 ways, for example, as 230400 + 467856 = 480^2 + 684^2 .

It is a super-2 number, since 2×698256² = 975122883072, which contains 22 as substring.

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

It is a self number, because there is not a number n which added to its sum of digits gives 698256.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 698256.

It is not an unprimeable number, because it can be changed into a prime (698251) by changing a digit.

698256 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1686 + ... + 2058.

2⁶⁹⁸²⁵⁶ 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 698256, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1055054).

698256 is an abundant number, since it is smaller than the sum of its proper divisors (1411852).

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

698256 is a wasteful number, since it uses less digits than its factorization.

698256 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 400 (or 391 counting only the distinct ones).

The product of its digits is 25920, while the sum is 36.

The square root of 698256 is about 835.6171372106. The cubic root of 698256 is about 88.7166005382.

The spelling of 698256 in words is "six hundred ninety-eight thousand, two hundred fifty-six".