68864717 has 4 divisors (see below), whose sum is σ = 68886720. Its totient is φ = 68842716.

The previous prime is 68864713. The next prime is 68864767. The reversal of 68864717 is 71746886.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 68864717 - 2² = 68864713 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68864713) 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, 5333 + ... + 12890.

It is an arithmetic number, because the mean of its divisors is an integer number (17221680).

Almost surely, 2^68864717 is an apocalyptic number.

It is an amenable number.

68864717 is a deficient number, since it is larger than the sum of its proper divisors (22003).

68864717 is a wasteful number, since it uses less digits than its factorization.

68864717 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22002.

The product of its digits is 451584, while the sum is 47.

The square root of 68864717 is about 8298.4767879413. The cubic root of 68864717 is about 409.8883634191. Note that the first 3 decimals are identical.

The spelling of 68864717 in words is "sixty-eight million, eight hundred sixty-four thousand, seven hundred seventeen".