68196911 has 4 divisors (see below), whose sum is σ = 72208512. Its totient is φ = 64185312.

The previous prime is 68196907. The next prime is 68196941. The reversal of 68196911 is 11969186.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 68196911 - 2² = 68196907 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68196941) 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 3 ways as a sum of consecutive naturals, for example, 2005775 + ... + 2005808.

It is an arithmetic number, because the mean of its divisors is an integer number (18052128).

Almost surely, 2^68196911 is an apocalyptic number.

68196911 is a deficient number, since it is larger than the sum of its proper divisors (4011601).

68196911 is a wasteful number, since it uses less digits than its factorization.

68196911 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4011600.

The product of its digits is 23328, while the sum is 41.

The square root of 68196911 is about 8258.1421034032. The cubic root of 68196911 is about 408.5591122702.

The spelling of 68196911 in words is "sixty-eight million, one hundred ninety-six thousand, nine hundred eleven".