68326618 has 4 divisors (see below), whose sum is σ = 102489930. Its totient is φ = 34163308.

The previous prime is 68326607. The next prime is 68326619. The reversal of 68326618 is 81662386.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 47651409 + 20675209 = 6903^2 + 4547^2 .

It is not an unprimeable number, because it can be changed into a prime (68326619) 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 as a sum of consecutive naturals, namely, 17081653 + ... + 17081656.

Almost surely, 2^68326618 is an apocalyptic number.

68326618 is a deficient number, since it is larger than the sum of its proper divisors (34163312).

68326618 is a wasteful number, since it uses less digits than its factorization.

68326618 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34163311.

The product of its digits is 82944, while the sum is 40.

The square root of 68326618 is about 8265.9916525484. The cubic root of 68326618 is about 408.8179676681.

The spelling of 68326618 in words is "sixty-eight million, three hundred twenty-six thousand, six hundred eighteen".