68321047 has 8 divisors (see below), whose sum is σ = 70543872. Its totient is φ = 66124800.

The previous prime is 68321041. The next prime is 68321051. The reversal of 68321047 is 74012386.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-68321047 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 (68321041) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1354 + ... + 11767.

It is an arithmetic number, because the mean of its divisors is an integer number (8817984).

Almost surely, 2^68321047 is an apocalyptic number.

68321047 is a deficient number, since it is larger than the sum of its proper divisors (2222825).

68321047 is a wasteful number, since it uses less digits than its factorization.

68321047 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13289.

The product of its (nonzero) digits is 8064, while the sum is 31.

The square root of 68321047 is about 8265.6546625177. The cubic root of 68321047 is about 408.8068563966.

The spelling of 68321047 in words is "sixty-eight million, three hundred twenty-one thousand, forty-seven".