68405882 has 8 divisors (see below), whose sum is σ = 102699252. Its totient is φ = 34172800.

The previous prime is 68405851. The next prime is 68405903. The reversal of 68405882 is 28850486.

It can be written as a sum of positive squares in 2 ways, for example, as 51423241 + 16982641 = 7171^2 + 4121^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12119 + ... + 16842.

Almost surely, 2^68405882 is an apocalyptic number.

68405882 is a deficient number, since it is larger than the sum of its proper divisors (34293370).

68405882 is a wasteful number, since it uses less digits than its factorization.

68405882 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30144.

The product of its (nonzero) digits is 122880, while the sum is 41.

The square root of 68405882 is about 8270.7848478848. The cubic root of 68405882 is about 408.9759930752.

The spelling of 68405882 in words is "sixty-eight million, four hundred five thousand, eight hundred eighty-two".