68577747 has 16 divisors (see below), whose sum is σ = 106724352. Its totient is φ = 38352960.

The previous prime is 68577727. The next prime is 68577749. The reversal of 68577747 is 74777586.

It is not a de Polignac number, because 68577747 - 2⁶ = 68577683 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 68577747.

It is not an unprimeable number, because it can be changed into a prime (68577749) 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 15 ways as a sum of consecutive naturals, for example, 33754 + ... + 35727.

It is an arithmetic number, because the mean of its divisors is an integer number (6670272).

Almost surely, 2^68577747 is an apocalyptic number.

68577747 is a deficient number, since it is larger than the sum of its proper divisors (38146605).

68577747 is a wasteful number, since it uses less digits than its factorization.

68577747 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69538.

The product of its digits is 2304960, while the sum is 51.

The square root of 68577747 is about 8281.1682146905. The cubic root of 68577747 is about 409.3182145037.

The spelling of 68577747 in words is "sixty-eight million, five hundred seventy-seven thousand, seven hundred forty-seven".