68408438 has 8 divisors (see below), whose sum is σ = 117271632. Its totient is φ = 29317896.

The previous prime is 68408387. The next prime is 68408443. The reversal of 68408438 is 83480486.

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

It is a junction number, because it is equal to n+sod(n) for n = 68408395 and 68408404.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2443145 + ... + 2443172.

It is an arithmetic number, because the mean of its divisors is an integer number (14658954).

Almost surely, 2^68408438 is an apocalyptic number.

68408438 is a deficient number, since it is larger than the sum of its proper divisors (48863194).

68408438 is a wasteful number, since it uses less digits than its factorization.

68408438 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4886326.

The product of its (nonzero) digits is 147456, while the sum is 41.

The square root of 68408438 is about 8270.9393662389. The cubic root of 68408438 is about 408.9810868361.

The spelling of 68408438 in words is "sixty-eight million, four hundred eight thousand, four hundred thirty-eight".