68320005 has 32 divisors (see below), whose sum is σ = 122846976. Its totient is φ = 32169984.

The previous prime is 68319989. The next prime is 68320009. The reversal of 68320005 is 50002386.

It is not a de Polignac number, because 68320005 - 2⁴ = 68319989 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68320009) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3132 + ... + 12101.

It is an arithmetic number, because the mean of its divisors is an integer number (3838968).

Almost surely, 2^68320005 is an apocalyptic number.

68320005 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

It is an amenable number.

68320005 is a deficient number, since it is larger than the sum of its proper divisors (54526971).

68320005 is a wasteful number, since it uses less digits than its factorization.

68320005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15277.

The product of its (nonzero) digits is 1440, while the sum is 24.

The square root of 68320005 is about 8265.5916303674. The cubic root of 68320005 is about 408.8047780770.

The spelling of 68320005 in words is "sixty-eight million, three hundred twenty thousand, five".