68042867 has 4 divisors (see below), whose sum is σ = 68063856. Its totient is φ = 68021880.

The previous prime is 68042839. The next prime is 68042873. The reversal of 68042867 is 76824086.

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

It is a cyclic number.

It is not a de Polignac number, because 68042867 - 2¹⁸ = 67780723 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (68042567) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4484 + ... + 12497.

It is an arithmetic number, because the mean of its divisors is an integer number (17015964).

Almost surely, 2^68042867 is an apocalyptic number.

68042867 is a deficient number, since it is larger than the sum of its proper divisors (20989).

68042867 is a wasteful number, since it uses less digits than its factorization.

68042867 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20988.

The product of its (nonzero) digits is 129024, while the sum is 41.

The square root of 68042867 is about 8248.8100353930. The cubic root of 68042867 is about 408.2512609543.

The spelling of 68042867 in words is "sixty-eight million, forty-two thousand, eight hundred sixty-seven".