68408 has 16 divisors (see below), whose sum is σ = 136080. Its totient is φ = 32128.

The previous prime is 68399. The next prime is 68437. The reversal of 68408 is 80486.

68408 is nontrivially palindromic in base 7.

It is a congruent number.

It is an unprimeable number.

68408 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 3 ways as a sum of consecutive naturals, for example, 116 + ... + 387.

It is an arithmetic number, because the mean of its divisors is an integer number (8505).

2⁶⁸⁴⁰⁸ is an apocalyptic number.

68408 is a gapful number since it is divisible by the number (68) formed by its first and last digit.

It is an amenable number.

68408 is a deficient number, since it is larger than the sum of its proper divisors (67672).

68408 is a wasteful number, since it uses less digits than its factorization.

68408 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 526 (or 522 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 26.

The square root of 68408 is about 261.5492305475. The cubic root of 68408 is about 40.8980213971.

The spelling of 68408 in words is "sixty-eight thousand, four hundred eight".