697646 has 16 divisors (see below), whose sum is σ = 1127520. Its totient is φ = 323680.

The previous prime is 697643. The next prime is 697673. The reversal of 697646 is 646796.

697646 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an Ulam number.

It is a Curzon number.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 697646.

It is not an unprimeable number, because it can be changed into a prime (697643) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9791 + ... + 9861.

It is an arithmetic number, because the mean of its divisors is an integer number (70470).

2⁶⁹⁷⁶⁴⁶ is an apocalyptic number.

697646 is a deficient number, since it is larger than the sum of its proper divisors (429874).

697646 is an equidigital number, since it uses as much as digits as its factorization.

697646 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 124 (or 90 counting only the distinct ones).

The product of its digits is 54432, while the sum is 38.

The square root of 697646 is about 835.2520577646. The cubic root of 697646 is about 88.6907585867.

The spelling of 697646 in words is "six hundred ninety-seven thousand, six hundred forty-six".