697240 has 16 divisors (see below), whose sum is σ = 1568880. Its totient is φ = 278880.

The previous prime is 697217. The next prime is 697259. The reversal of 697240 is 42796.

It is a super-2 number, since 2×697240² = 972287235200, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 697199 and 697208.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8676 + ... + 8755.

It is an arithmetic number, because the mean of its divisors is an integer number (98055).

2⁶⁹⁷²⁴⁰ is an apocalyptic number.

It is an amenable number.

697240 is an abundant number, since it is smaller than the sum of its proper divisors (871640).

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

697240 is a wasteful number, since it uses less digits than its factorization.

697240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17442 (or 17438 counting only the distinct ones).

The product of its (nonzero) digits is 3024, while the sum is 28.

The square root of 697240 is about 835.0089819876. The cubic root of 697240 is about 88.6735505111.

The spelling of 697240 in words is "six hundred ninety-seven thousand, two hundred forty".