68352247 has 4 divisors (see below), whose sum is σ = 68409360. Its totient is φ = 68295136.

The previous prime is 68352239. The next prime is 68352281. The reversal of 68352247 is 74225386.

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 68352247 - 2³ = 68352239 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 (68352287) 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, 26722 + ... + 29167.

It is an arithmetic number, because the mean of its divisors is an integer number (17102340).

Almost surely, 2^68352247 is an apocalyptic number.

68352247 is a deficient number, since it is larger than the sum of its proper divisors (57113).

68352247 is a wasteful number, since it uses less digits than its factorization.

68352247 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57112.

The product of its digits is 80640, while the sum is 37.

The square root of 68352247 is about 8267.5417749171. The cubic root of 68352247 is about 408.8690765245.

The spelling of 68352247 in words is "sixty-eight million, three hundred fifty-two thousand, two hundred forty-seven".