68907447 has 24 divisors (see below), whose sum is σ = 114170784. Its totient is φ = 39230784.

The previous prime is 68907427. The next prime is 68907463. The reversal of 68907447 is 74470986.

It is not a de Polignac number, because 68907447 - 2⁶ = 68907383 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68907427) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 16593 + ... + 20325.

It is an arithmetic number, because the mean of its divisors is an integer number (4757116).

Almost surely, 2^68907447 is an apocalyptic number.

68907447 is a deficient number, since it is larger than the sum of its proper divisors (45263337).

68907447 is a wasteful number, since it uses less digits than its factorization.

68907447 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4039 (or 4036 counting only the distinct ones).

The product of its (nonzero) digits is 338688, while the sum is 45.

The square root of 68907447 is about 8301.0509575595. The cubic root of 68907447 is about 409.9731233621.

The spelling of 68907447 in words is "sixty-eight million, nine hundred seven thousand, four hundred forty-seven".