68382905 has 4 divisors (see below), whose sum is σ = 82059492. Its totient is φ = 54706320.

The previous prime is 68382889. The next prime is 68382911. The reversal of 68382905 is 50928386.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 14961424 + 53421481 = 3868^2 + 7309^2 .

It is not a de Polignac number, because 68382905 - 2⁴ = 68382889 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6838286 + ... + 6838295.

It is an arithmetic number, because the mean of its divisors is an integer number (20514873).

Almost surely, 2^68382905 is an apocalyptic number.

It is an amenable number.

68382905 is a deficient number, since it is larger than the sum of its proper divisors (13676587).

68382905 is a wasteful number, since it uses less digits than its factorization.

68382905 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13676586.

The product of its (nonzero) digits is 103680, while the sum is 41.

The square root of 68382905 is about 8269.3956852965. The cubic root of 68382905 is about 408.9301973364.

The spelling of 68382905 in words is "sixty-eight million, three hundred eighty-two thousand, nine hundred five".