68209618 has 8 divisors (see below), whose sum is σ = 103841712. Its totient is φ = 33595716.

The previous prime is 68209613. The next prime is 68209621. The reversal of 68209618 is 81690286.

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

It is not an unprimeable number, because it can be changed into a prime (68209613) 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, 254380 + ... + 254647.

It is an arithmetic number, because the mean of its divisors is an integer number (12980214).

Almost surely, 2^68209618 is an apocalyptic number.

68209618 is a deficient number, since it is larger than the sum of its proper divisors (35632094).

68209618 is a wasteful number, since it uses less digits than its factorization.

68209618 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 509096.

The product of its (nonzero) digits is 41472, while the sum is 40.

The square root of 68209618 is about 8258.9114294803. The cubic root of 68209618 is about 408.5844860403.

The spelling of 68209618 in words is "sixty-eight million, two hundred nine thousand, six hundred eighteen".