68371978 has 8 divisors (see below), whose sum is σ = 104943168. Its totient is φ = 33390924.

The previous prime is 68371931. The next prime is 68371991. The reversal of 68371978 is 87917386.

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 397426 + ... + 397597.

It is an arithmetic number, because the mean of its divisors is an integer number (13117896).

Almost surely, 2^68371978 is an apocalyptic number.

68371978 is a deficient number, since it is larger than the sum of its proper divisors (36571190).

68371978 is a wasteful number, since it uses less digits than its factorization.

68371978 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 795068.

The product of its digits is 508032, while the sum is 49.

The square root of 68371978 is about 8268.7349697520. The cubic root of 68371978 is about 408.9084150002.

The spelling of 68371978 in words is "sixty-eight million, three hundred seventy-one thousand, nine hundred seventy-eight".