68445605 has 16 divisors (see below), whose sum is σ = 85579200. Its totient is φ = 52506240.

The previous prime is 68445571. The next prime is 68445607. The reversal of 68445605 is 50654486.

It is not a de Polignac number, because 68445605 - 2⁶ = 68445541 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68445607) 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 15 ways as a sum of consecutive naturals, for example, 9266 + ... + 14924.

It is an arithmetic number, because the mean of its divisors is an integer number (5348700).

Almost surely, 2^68445605 is an apocalyptic number.

It is an amenable number.

68445605 is a deficient number, since it is larger than the sum of its proper divisors (17133595).

68445605 is a wasteful number, since it uses less digits than its factorization.

68445605 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5764.

The product of its (nonzero) digits is 115200, while the sum is 38.

The square root of 68445605 is about 8273.1859038704. The cubic root of 68445605 is about 409.0551412873.

It can be divided in two parts, 68445 and 605, that multiplied together give a square (41409225 = 6435²).

The spelling of 68445605 in words is "sixty-eight million, four hundred forty-five thousand, six hundred five".