68166678 has 8 divisors (see below), whose sum is σ = 136333368. Its totient is φ = 22722224.

The previous prime is 68166677. The next prime is 68166689. The reversal of 68166678 is 87666186.

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

68166678 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68166677) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5680551 + ... + 5680562.

It is an arithmetic number, because the mean of its divisors is an integer number (17041671).

Almost surely, 2^68166678 is an apocalyptic number.

68166678 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.

68166678 is a wasteful number, since it uses less digits than its factorization.

68166678 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11361118.

The product of its digits is 580608, while the sum is 48.

The square root of 68166678 is about 8256.3114040109. The cubic root of 68166678 is about 408.4987293134.

The spelling of 68166678 in words is "sixty-eight million, one hundred sixty-six thousand, six hundred seventy-eight".