68517449 has 16 divisors (see below), whose sum is σ = 91996800. Its totient is φ = 49282560.

The previous prime is 68517433. The next prime is 68517473. The reversal of 68517449 is 94471586.

It is a cyclic number.

It is not a de Polignac number, because 68517449 - 2⁴ = 68517433 is a prime.

It is a Smith number, since the sum of its digits (44) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (68517479) 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, 33224 + ... + 35225.

It is an arithmetic number, because the mean of its divisors is an integer number (5749800).

Almost surely, 2^68517449 is an apocalyptic number.

It is an amenable number.

68517449 is a deficient number, since it is larger than the sum of its proper divisors (23479351).

68517449 is a wasteful number, since it uses less digits than its factorization.

68517449 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68480.

The product of its digits is 241920, while the sum is 44.

The square root of 68517449 is about 8277.5267441428. The cubic root of 68517449 is about 409.1982129578.

The spelling of 68517449 in words is "sixty-eight million, five hundred seventeen thousand, four hundred forty-nine".