68721118 has 8 divisors (see below), whose sum is σ = 103834512. Its totient is φ = 34109616.

The previous prime is 68721109. The next prime is 68721127. The reversal of 68721118 is 81112786.

It is an interprime number because it is at equal distance from previous prime (68721109) and next prime (68721127).

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

It is a congruent number.

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, 125130 + ... + 125677.

It is an arithmetic number, because the mean of its divisors is an integer number (12979314).

Almost surely, 2^68721118 is an apocalyptic number.

68721118 is a deficient number, since it is larger than the sum of its proper divisors (35113394).

68721118 is a wasteful number, since it uses less digits than its factorization.

68721118 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 250946.

The product of its digits is 5376, while the sum is 34.

The square root of 68721118 is about 8289.8201428017. The cubic root of 68721118 is about 409.6032608726.

The spelling of 68721118 in words is "sixty-eight million, seven hundred twenty-one thousand, one hundred eighteen".