698544 has 150 divisors (see below), whose sum is σ = 2565684. Its totient is φ = 181440.

The previous prime is 698543. The next prime is 698557. The reversal of 698544 is 445896.

698544 = T₆₇ + T₆₈ + ... + T₁₆₄.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

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

Its product of digits (34560) is a multiple of the sum of its prime factors (45).

It is a zygodrome in base 6.

It is a junction number, because it is equal to n+sod(n) for n = 698499 and 698508.

It is not an unprimeable number, because it can be changed into a prime (698543) by changing a digit.

It is a polite number, since it can be written in 29 ways as a sum of consecutive naturals, for example, 63499 + ... + 63509.

698544 is a Friedman number, since it can be written as (548-9)*6^4, using all its digits and the basic arithmetic operations.

2⁶⁹⁸⁵⁴⁴ 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 698544, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1282842).

698544 is an abundant number, since it is smaller than the sum of its proper divisors (1867140).

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

698544 is a wasteful number, since it uses less digits than its factorization.

698544 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45 (or 23 counting only the distinct ones).

The product of its digits is 34560, while the sum is 36.

The square root of 698544 is about 835.7894471696. The cubic root of 698544 is about 88.7287960982.

The spelling of 698544 in words is "six hundred ninety-eight thousand, five hundred forty-four".