697028 has 6 divisors (see below), whose sum is σ = 1219806. Its totient is φ = 348512.

The previous prime is 697019. The next prime is 697033. The reversal of 697028 is 820796.

Added to its reverse (820796) it gives a square (1517824 = 1232²).

It can be written as a sum of positive squares in only one way, i.e., 643204 + 53824 = 802^2 + 232^2 .

It is a junction number, because it is equal to n+sod(n) for n = 696985 and 697003.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 697028.

It is an unprimeable number.

697028 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 as a sum of consecutive naturals, namely, 87125 + ... + 87132.

It is an arithmetic number, because the mean of its divisors is an integer number (203301).

2⁶⁹⁷⁰²⁸ is an apocalyptic number.

It is an amenable number.

697028 is a deficient number, since it is larger than the sum of its proper divisors (522778).

697028 is a wasteful number, since it uses less digits than its factorization.

697028 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 174261 (or 174259 counting only the distinct ones).

The product of its (nonzero) digits is 6048, while the sum is 32.

The square root of 697028 is about 834.8820275943. The cubic root of 697028 is about 88.6645623586.

Adding to 697028 its reverse (820796), we get a square (1517824 = 1232²).

The spelling of 697028 in words is "six hundred ninety-seven thousand, twenty-eight".