68807071 has 4 divisors (see below), whose sum is σ = 68989000. Its totient is φ = 68625144.

The previous prime is 68807059. The next prime is 68807093. The reversal of 68807071 is 17070886.

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 68807071 - 2⁹ = 68806559 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 68807071.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68807971) 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, 90396 + ... + 91153.

It is an arithmetic number, because the mean of its divisors is an integer number (17247250).

Almost surely, 2^68807071 is an apocalyptic number.

68807071 is a deficient number, since it is larger than the sum of its proper divisors (181929).

68807071 is a wasteful number, since it uses less digits than its factorization.

68807071 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 181928.

The product of its (nonzero) digits is 18816, while the sum is 37.

The square root of 68807071 is about 8295.0027727542. The cubic root of 68807071 is about 409.7739602736.

The spelling of 68807071 in words is "sixty-eight million, eight hundred seven thousand, seventy-one".