68543451 has 24 divisors (see below), whose sum is σ = 101003760. Its totient is φ = 44784576.

The previous prime is 68543417. The next prime is 68543459. The reversal of 68543451 is 15434586.

It is a happy number.

68543451 is a `hidden beast` number, since 68 + 543 + 4 + 51 = 666.

It is not a de Polignac number, because 68543451 - 2¹⁵ = 68510683 is a prime.

It is not an unprimeable number, because it can be changed into a prime (68543459) 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, 104641 + ... + 105293.

It is an arithmetic number, because the mean of its divisors is an integer number (4208490).

Almost surely, 2^68543451 is an apocalyptic number.

68543451 is a deficient number, since it is larger than the sum of its proper divisors (32460309).

68543451 is a wasteful number, since it uses less digits than its factorization.

68543451 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 875 (or 872 counting only the distinct ones).

The product of its digits is 57600, while the sum is 36.

The square root of 68543451 is about 8279.0972333945. The cubic root of 68543451 is about 409.2499692449.

The spelling of 68543451 in words is "sixty-eight million, five hundred forty-three thousand, four hundred fifty-one".