68022813 has 16 divisors (see below), whose sum is σ = 93385152. Its totient is φ = 44016000.

The previous prime is 68022809. The next prime is 68022827. The reversal of 68022813 is 31822086.

It is not a de Polignac number, because 68022813 - 2² = 68022809 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68022803) 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, 24643 + ... + 27263.

It is an arithmetic number, because the mean of its divisors is an integer number (5836572).

Almost surely, 2^68022813 is an apocalyptic number.

It is an amenable number.

68022813 is a deficient number, since it is larger than the sum of its proper divisors (25362339).

68022813 is a wasteful number, since it uses less digits than its factorization.

68022813 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2876.

The product of its (nonzero) digits is 4608, while the sum is 30.

The square root of 68022813 is about 8247.5943765440. The cubic root of 68022813 is about 408.2111495971.

Adding to 68022813 its reverse (31822086), we get a palindrome (99844899).

The spelling of 68022813 in words is "sixty-eight million, twenty-two thousand, eight hundred thirteen".