68004109 has 4 divisors (see below), whose sum is σ = 68146560. Its totient is φ = 67861660.

The previous prime is 68004107. The next prime is 68004143. The reversal of 68004109 is 90140086.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 68004109 - 2¹ = 68004107 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68004107) 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 3 ways as a sum of consecutive naturals, for example, 70507 + ... + 71464.

It is an arithmetic number, because the mean of its divisors is an integer number (17036640).

Almost surely, 2^68004109 is an apocalyptic number.

It is an amenable number.

68004109 is a deficient number, since it is larger than the sum of its proper divisors (142451).

68004109 is a wasteful number, since it uses less digits than its factorization.

68004109 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 142450.

The product of its (nonzero) digits is 1728, while the sum is 28.

The square root of 68004109 is about 8246.4603921925. The cubic root of 68004109 is about 408.1737313599.

The spelling of 68004109 in words is "sixty-eight million, four thousand, one hundred nine".