39668 has 12 divisors (see below), whose sum is σ = 71232. Its totient is φ = 19320.

The previous prime is 39667. The next prime is 39671. The reversal of 39668 is 86693.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (39667) 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, 83 + ... + 293.

It is an arithmetic number, because the mean of its divisors is an integer number (5936).

2³⁹⁶⁶⁸ is an apocalyptic number.

It is an amenable number.

39668 is a deficient number, since it is larger than the sum of its proper divisors (31564).

39668 is a wasteful number, since it uses less digits than its factorization.

39668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 262 (or 260 counting only the distinct ones).

The product of its digits is 7776, while the sum is 32.

The square root of 39668 is about 199.1682705654. The cubic root of 39668 is about 34.1046372724.

It can be divided in two parts, 396 and 68, that added together give a palindrome (464).

The spelling of 39668 in words is "thirty-nine thousand, six hundred sixty-eight".