68663313 has 12 divisors (see below), whose sum is σ = 99507408. Its totient is φ = 45624600.

The previous prime is 68663311. The next prime is 68663333. The reversal of 68663313 is 31336686.

68663313 is a `hidden beast` number, since 6 + 8 + 6 + 633 + 13 = 666.

It is not a de Polignac number, because 68663313 - 2¹ = 68663311 is a prime.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (68663311) 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 11 ways as a sum of consecutive naturals, for example, 9663 + ... + 15188.

It is an arithmetic number, because the mean of its divisors is an integer number (8292284).

Almost surely, 2^68663313 is an apocalyptic number.

It is an amenable number.

68663313 is a deficient number, since it is larger than the sum of its proper divisors (30844095).

68663313 is a wasteful number, since it uses less digits than its factorization.

68663313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25164 (or 25161 counting only the distinct ones).

The product of its digits is 46656, while the sum is 36.

The square root of 68663313 is about 8286.3329042466. The cubic root of 68663313 is about 409.4883822687.

Adding to 68663313 its reverse (31336686), we get a palindrome (99999999).

The spelling of 68663313 in words is "sixty-eight million, six hundred sixty-three thousand, three hundred thirteen".