68806319 has 4 divisors (see below), whose sum is σ = 68856096. Its totient is φ = 68756544.

The previous prime is 68806307. The next prime is 68806343. The reversal of 68806319 is 91360886.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 91360886 = 2 ⋅45680443.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-68806319 is a prime.

It is a super-2 number, since 2×68806319² = 9468619068659522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68806399) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22754 + ... + 25599.

It is an arithmetic number, because the mean of its divisors is an integer number (17214024).

Almost surely, 2^68806319 is an apocalyptic number.

68806319 is a deficient number, since it is larger than the sum of its proper divisors (49777).

68806319 is a wasteful number, since it uses less digits than its factorization.

68806319 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49776.

The product of its (nonzero) digits is 62208, while the sum is 41.

The square root of 68806319 is about 8294.9574441344. The cubic root of 68806319 is about 409.7724674467.

The spelling of 68806319 in words is "sixty-eight million, eight hundred six thousand, three hundred nineteen".