68112819 has 20 divisors (see below), whose sum is σ = 104503344. Its totient is φ = 44179344.

The previous prime is 68112809. The next prime is 68112827. The reversal of 68112819 is 91821186.

It is not a de Polignac number, because 68112819 - 2⁷ = 68112691 is a prime.

It is a super-2 number, since 2×68112819² = 9278712224253522, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (68112809) 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 19 ways as a sum of consecutive naturals, for example, 8367 + ... + 14360.

Almost surely, 2^68112819 is an apocalyptic number.

68112819 is a deficient number, since it is larger than the sum of its proper divisors (36390525).

68112819 is a wasteful number, since it uses less digits than its factorization.

68112819 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22776 (or 22767 counting only the distinct ones).

The product of its digits is 6912, while the sum is 36.

The square root of 68112819 is about 8253.0490729184. The cubic root of 68112819 is about 408.3911150033.

The spelling of 68112819 in words is "sixty-eight million, one hundred twelve thousand, eight hundred nineteen".