68544005 has 16 divisors (see below), whose sum is σ = 84672000. Its totient is φ = 53235840.

The previous prime is 68543989. The next prime is 68544011. The reversal of 68544005 is 50044586.

It is not a de Polignac number, because 68544005 - 2⁴ = 68543989 is a prime.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 48296 + ... + 49694.

It is an arithmetic number, because the mean of its divisors is an integer number (5292000).

Almost surely, 2^68544005 is an apocalyptic number.

It is an amenable number.

68544005 is a deficient number, since it is larger than the sum of its proper divisors (16127995).

68544005 is a wasteful number, since it uses less digits than its factorization.

68544005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1684.

The product of its (nonzero) digits is 19200, while the sum is 32.

The square root of 68544005 is about 8279.1306910810. The cubic root of 68544005 is about 409.2510718247.

The spelling of 68544005 in words is "sixty-eight million, five hundred forty-four thousand, five".