697720 has 16 divisors (see below), whose sum is σ = 1569960. Its totient is φ = 279072.

The previous prime is 697703. The next prime is 697727. The reversal of 697720 is 27796.

It is a happy number.

697720 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (697727) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8682 + ... + 8761.

2⁶⁹⁷⁷²⁰ is an apocalyptic number.

It is an amenable number.

697720 is an abundant number, since it is smaller than the sum of its proper divisors (872240).

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

697720 is a wasteful number, since it uses less digits than its factorization.

697720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17454 (or 17450 counting only the distinct ones).

The product of its (nonzero) digits is 5292, while the sum is 31.

The square root of 697720 is about 835.2963545952. The cubic root of 697720 is about 88.6938943146.

The spelling of 697720 in words is "six hundred ninety-seven thousand, seven hundred twenty".