68359947 has 8 divisors (see below), whose sum is σ = 91693056. Its totient is φ = 45300072.

The previous prime is 68359943. The next prime is 68359957. The reversal of 68359947 is 74995386.

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

It is not a de Polignac number, because 68359947 - 2² = 68359943 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 68359947.

It is not an unprimeable number, because it can be changed into a prime (68359943) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 67723 + ... + 68724.

It is an arithmetic number, because the mean of its divisors is an integer number (11461632).

Almost surely, 2^68359947 is an apocalyptic number.

68359947 is a deficient number, since it is larger than the sum of its proper divisors (23333109).

68359947 is a wasteful number, since it uses less digits than its factorization.

68359947 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 136617.

The product of its digits is 1632960, while the sum is 51.

The square root of 68359947 is about 8268.0074383131. The cubic root of 68359947 is about 408.8844292199.

The spelling of 68359947 in words is "sixty-eight million, three hundred fifty-nine thousand, nine hundred forty-seven".