68547689 has 8 divisors (see below), whose sum is σ = 82948608. Its totient is φ = 55298880.

The previous prime is 68547679. The next prime is 68547691. The reversal of 68547689 is 98674586.

68547689 = T₄₄₂₂ + T₄₄₂₃ + ... + T₄₄₂₈.

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

It is not a de Polignac number, because 68547689 - 2⁴ = 68547673 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 68547689.

It is not an unprimeable number, because it can be changed into a prime (68547629) 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 7 ways as a sum of consecutive naturals, for example, 287897 + ... + 288134.

It is an arithmetic number, because the mean of its divisors is an integer number (10368576).

Almost surely, 2^68547689 is an apocalyptic number.

It is an amenable number.

68547689 is a deficient number, since it is larger than the sum of its proper divisors (14400919).

68547689 is a wasteful number, since it uses less digits than its factorization.

68547689 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 576055.

The product of its digits is 2903040, while the sum is 53.

The square root of 68547689 is about 8279.3531752185. The cubic root of 68547689 is about 409.2584036302.

The spelling of 68547689 in words is "sixty-eight million, five hundred forty-seven thousand, six hundred eighty-nine".