693668 has 18 divisors (see below), whose sum is σ = 1298178. Its totient is φ = 323200.

The previous prime is 693661. The next prime is 693677. The reversal of 693668 is 866396.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 565504 + 128164 = 752^2 + 358^2 .

It is not an unprimeable number, because it can be changed into a prime (693661) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 6818 + ... + 6918.

It is an arithmetic number, because the mean of its divisors is an integer number (72121).

2⁶⁹³⁶⁶⁸ is an apocalyptic number.

693668 is a gapful number since it is divisible by the number (68) formed by its first and last digit.

It is an amenable number.

693668 is a deficient number, since it is larger than the sum of its proper divisors (604510).

693668 is a wasteful number, since it uses less digits than its factorization.

693668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 223 (or 120 counting only the distinct ones).

The product of its digits is 46656, while the sum is 38.

The square root of 693668 is about 832.8673363748. The cubic root of 693668 is about 88.5218646436.

The spelling of 693668 in words is "six hundred ninety-three thousand, six hundred sixty-eight".