68627778 has 8 divisors (see below), whose sum is σ = 137255568. Its totient is φ = 22875924.

The previous prime is 68627777. The next prime is 68627807. The reversal of 68627778 is 87772686.

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

68627778 is an admirable number.

It is a self number, because there is not a number n which added to its sum of digits gives 68627778.

It is not an unprimeable number, because it can be changed into a prime (68627771) 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, 5718976 + ... + 5718987.

It is an arithmetic number, because the mean of its divisors is an integer number (17156946).

Almost surely, 2^68627778 is an apocalyptic number.

68627778 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

68627778 is a wasteful number, since it uses less digits than its factorization.

68627778 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11437968.

The product of its digits is 1580544, while the sum is 51.

The square root of 68627778 is about 8284.1884333953. The cubic root of 68627778 is about 409.4177298831.

The spelling of 68627778 in words is "sixty-eight million, six hundred twenty-seven thousand, seven hundred seventy-eight".