68706871 has 8 divisors (see below), whose sum is σ = 69548544. Its totient is φ = 67868760.

The previous prime is 68706863. The next prime is 68706889. The reversal of 68706871 is 17860786.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 68706871 - 2³ = 68706863 is a prime.

It is a super-2 number, since 2×68706871² = 9441268245221282, 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 (68706851) 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 7 ways as a sum of consecutive naturals, for example, 66126 + ... + 67156.

It is an arithmetic number, because the mean of its divisors is an integer number (8693568).

Almost surely, 2^68706871 is an apocalyptic number.

68706871 is a deficient number, since it is larger than the sum of its proper divisors (841673).

68706871 is a wasteful number, since it uses less digits than its factorization.

68706871 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1781.

The product of its (nonzero) digits is 112896, while the sum is 43.

The square root of 68706871 is about 8288.9607913176. The cubic root of 68706871 is about 409.5749531212.

The spelling of 68706871 in words is "sixty-eight million, seven hundred six thousand, eight hundred seventy-one".