68183405 has 4 divisors (see below), whose sum is σ = 81820092. Its totient is φ = 54546720.

The previous prime is 68183363. The next prime is 68183407. The reversal of 68183405 is 50438186.

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 46635241 + 21548164 = 6829^2 + 4642^2 .

It is not a de Polignac number, because 68183405 - 2²⁴ = 51406189 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 (68183407) 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, 6818336 + ... + 6818345.

It is an arithmetic number, because the mean of its divisors is an integer number (20455023).

Almost surely, 2^68183405 is an apocalyptic number.

It is an amenable number.

68183405 is a deficient number, since it is larger than the sum of its proper divisors (13636687).

68183405 is a wasteful number, since it uses less digits than its factorization.

68183405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13636686.

The product of its (nonzero) digits is 23040, while the sum is 35.

The square root of 68183405 is about 8257.3243245012. The cubic root of 68183405 is about 408.5321395740.

The spelling of 68183405 in words is "sixty-eight million, one hundred eighty-three thousand, four hundred five".