68074147 has 4 divisors (see below), whose sum is σ = 68106816. Its totient is φ = 68041480.

The previous prime is 68074129. The next prime is 68074151. The reversal of 68074147 is 74147086.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-68074147 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (68074177) 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 3 ways as a sum of consecutive naturals, for example, 12979 + ... + 17452.

It is an arithmetic number, because the mean of its divisors is an integer number (17026704).

Almost surely, 2^68074147 is an apocalyptic number.

68074147 is a deficient number, since it is larger than the sum of its proper divisors (32669).

68074147 is a wasteful number, since it uses less digits than its factorization.

68074147 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32668.

The product of its (nonzero) digits is 37632, while the sum is 37.

The square root of 68074147 is about 8250.7058485926. The cubic root of 68074147 is about 408.3138104600.

The spelling of 68074147 in words is "sixty-eight million, seventy-four thousand, one hundred forty-seven".