697228 has 24 divisors (see below), whose sum is σ = 1434272. Its totient is φ = 290304.

The previous prime is 697217. The next prime is 697259. The reversal of 697228 is 822796.

697228 is nontrivially palindromic in base 15.

It is a super-2 number, since 2×697228² = 972253767968, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 697193 and 697202.

It is a congruent number.

It is an unprimeable number.

697228 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 7 ways as a sum of consecutive naturals, for example, 700 + ... + 1372.

2⁶⁹⁷²²⁸ 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 697228, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (717136).

697228 is an abundant number, since it is smaller than the sum of its proper divisors (737044).

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

697228 is a wasteful number, since it uses less digits than its factorization.

697228 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 721 (or 719 counting only the distinct ones).

The product of its digits is 12096, while the sum is 34.

The square root of 697228 is about 835.0017964053. The cubic root of 697228 is about 88.6730417964.

The spelling of 697228 in words is "six hundred ninety-seven thousand, two hundred twenty-eight".