68675978 has 8 divisors (see below), whose sum is σ = 117730272. Its totient is φ = 29432556.

The previous prime is 68675947. The next prime is 68675989. The reversal of 68675978 is 87957686.

It is a happy number.

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

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, 2452700 + ... + 2452727.

It is an arithmetic number, because the mean of its divisors is an integer number (14716284).

Almost surely, 2^68675978 is an apocalyptic number.

68675978 is a deficient number, since it is larger than the sum of its proper divisors (49054294).

68675978 is a wasteful number, since it uses less digits than its factorization.

68675978 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4905436.

The product of its digits is 5080320, while the sum is 56.

The square root of 68675978 is about 8287.0970791949. The cubic root of 68675978 is about 409.5135575348.

The spelling of 68675978 in words is "sixty-eight million, six hundred seventy-five thousand, nine hundred seventy-eight".