68005583 has 4 divisors (see below), whose sum is σ = 69158280. Its totient is φ = 66852888.

The previous prime is 68005571. The next prime is 68005631. The reversal of 68005583 is 38550086.

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

It is a cyclic number.

It is not a de Polignac number, because 68005583 - 2¹² = 68001487 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 (68005513) 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, 576260 + ... + 576377.

It is an arithmetic number, because the mean of its divisors is an integer number (17289570).

Almost surely, 2^68005583 is an apocalyptic number.

68005583 is a deficient number, since it is larger than the sum of its proper divisors (1152697).

68005583 is a wasteful number, since it uses less digits than its factorization.

68005583 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1152696.

The product of its (nonzero) digits is 28800, while the sum is 35.

The square root of 68005583 is about 8246.5497633859. The cubic root of 68005583 is about 408.1766804157.

The spelling of 68005583 in words is "sixty-eight million, five thousand, five hundred eighty-three".