68978107 has 12 divisors (see below), whose sum is σ = 76322848. Its totient is φ = 62290800.

The previous prime is 68978089. The next prime is 68978141. The reversal of 68978107 is 70187986.

It is a de Polignac number, because none of the positive numbers 2^k-68978107 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (68978167) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 17182 + ... + 20812.

Almost surely, 2^68978107 is an apocalyptic number.

68978107 is a deficient number, since it is larger than the sum of its proper divisors (7344741).

68978107 is a wasteful number, since it uses less digits than its factorization.

68978107 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3810 (or 3799 counting only the distinct ones).

The product of its (nonzero) digits is 169344, while the sum is 46.

The square root of 68978107 is about 8305.3059546292. The cubic root of 68978107 is about 410.1132088728.

The spelling of 68978107 in words is "sixty-eight million, nine hundred seventy-eight thousand, one hundred seven".