68906 has 8 divisors (see below), whose sum is σ = 104544. Its totient is φ = 34060.

The previous prime is 68903. The next prime is 68909. The reversal of 68906 is 60986.

It is an interprime number because it is at equal distance from previous prime (68903) and next prime (68909).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (68903) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 131 + ... + 393.

It is an arithmetic number, because the mean of its divisors is an integer number (13068).

2⁶⁸⁹⁰⁶ is an apocalyptic number.

It is a pronic number, being equal to 262×263.

68906 is a deficient number, since it is larger than the sum of its proper divisors (35638).

68906 is a wasteful number, since it uses less digits than its factorization.

68906 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 396.

The product of its (nonzero) digits is 2592, while the sum is 29.

The square root of 68906 is about 262.4995238091. The cubic root of 68906 is about 40.9970253642.

The spelling of 68906 in words is "sixty-eight thousand, nine hundred six".