68545642 has 16 divisors (see below), whose sum is σ = 114283872. Its totient is φ = 30568720.

The previous prime is 68545637. The next prime is 68545643. The reversal of 68545642 is 24654586.

It is a junction number, because it is equal to n+sod(n) for n = 68545595 and 68545604.

It is not an unprimeable number, because it can be changed into a prime (68545643) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 28228 + ... + 30559.

It is an arithmetic number, because the mean of its divisors is an integer number (7142742).

Almost surely, 2^68545642 is an apocalyptic number.

68545642 is a deficient number, since it is larger than the sum of its proper divisors (45738230).

68545642 is a wasteful number, since it uses less digits than its factorization.

68545642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58853.

The product of its digits is 230400, while the sum is 40.

The square root of 68545642 is about 8279.2295535273. The cubic root of 68545642 is about 409.2543297739.

The spelling of 68545642 in words is "sixty-eight million, five hundred forty-five thousand, six hundred forty-two".