68321406 has 8 divisors (see below), whose sum is σ = 136642824. Its totient is φ = 22773800.

The previous prime is 68321401. The next prime is 68321411. The reversal of 68321406 is 60412386.

It is an interprime number because it is at equal distance from previous prime (68321401) and next prime (68321411).

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

68321406 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68321401) 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, 5693445 + ... + 5693456.

It is an arithmetic number, because the mean of its divisors is an integer number (17080353).

Almost surely, 2^68321406 is an apocalyptic number.

68321406 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

68321406 is a wasteful number, since it uses less digits than its factorization.

68321406 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11386906.

The product of its (nonzero) digits is 6912, while the sum is 30.

The square root of 68321406 is about 8265.6763788573. The cubic root of 68321406 is about 408.8075724346.

The spelling of 68321406 in words is "sixty-eight million, three hundred twenty-one thousand, four hundred six".