697608 has 24 divisors (see below), whose sum is σ = 1889550. Its totient is φ = 232512.

The previous prime is 697603. The next prime is 697637. The reversal of 697608 is 806796.

It can be written as a sum of positive squares in only one way, i.e., 580644 + 116964 = 762^2 + 342^2 .

It is a tau number, because it is divible by the number of its divisors (24).

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

It is a nialpdrome in base 15.

It is not an unprimeable number, because it can be changed into a prime (697601) by changing a digit.

697608 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4773 + ... + 4916.

2⁶⁹⁷⁶⁰⁸ is an apocalyptic number.

It is an amenable number.

697608 is an abundant number, since it is smaller than the sum of its proper divisors (1191942).

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

697608 is a wasteful number, since it uses less digits than its factorization.

697608 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9701 (or 9694 counting only the distinct ones).

The product of its (nonzero) digits is 18144, while the sum is 36.

The square root of 697608 is about 835.2293098305. The cubic root of 697608 is about 88.6891482619.

The spelling of 697608 in words is "six hundred ninety-seven thousand, six hundred eight".