68324513 has 24 divisors (see below), whose sum is σ = 79869120. Its totient is φ = 58164480.

The previous prime is 68324489. The next prime is 68324539. The reversal of 68324513 is 31542386.

It is not a de Polignac number, because 68324513 - 2¹⁶ = 68258977 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 68324513.

It is not an unprimeable number, because it can be changed into a prime (68324563) 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, 126023 + ... + 126563.

It is an arithmetic number, because the mean of its divisors is an integer number (3327880).

Almost surely, 2^68324513 is an apocalyptic number.

It is an amenable number.

68324513 is a deficient number, since it is larger than the sum of its proper divisors (11544607).

68324513 is a wasteful number, since it uses less digits than its factorization.

68324513 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 617 (or 600 counting only the distinct ones).

The product of its digits is 17280, while the sum is 32.

The square root of 68324513 is about 8265.8643226223. The cubic root of 68324513 is about 408.8137693498.

Adding to 68324513 its reverse (31542386), we get a palindrome (99866899).

The spelling of 68324513 in words is "sixty-eight million, three hundred twenty-four thousand, five hundred thirteen".