68212449 has 20 divisors (see below), whose sum is σ = 107893764. Its totient is φ = 42799104.

The previous prime is 68212447. The next prime is 68212481. The reversal of 68212449 is 94421286.

It can be written as a sum of positive squares in 2 ways, for example, as 42810849 + 25401600 = 6543^2 + 5040^2 .

It is not a de Polignac number, because 68212449 - 2¹ = 68212447 is a prime.

It is not an unprimeable number, because it can be changed into a prime (68212447) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 23392 + ... + 26145.

Almost surely, 2^68212449 is an apocalyptic number.

It is an amenable number.

68212449 is a deficient number, since it is larger than the sum of its proper divisors (39681315).

68212449 is a wasteful number, since it uses less digits than its factorization.

68212449 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49566 (or 49557 counting only the distinct ones).

The product of its digits is 27648, while the sum is 36.

The square root of 68212449 is about 8259.0828183280. The cubic root of 68212449 is about 408.5901386482.

It can be divided in two parts, 682 and 12449, that added together give a palindrome (13131).

The spelling of 68212449 in words is "sixty-eight million, two hundred twelve thousand, four hundred forty-nine".