68631871 has 8 divisors (see below), whose sum is σ = 85567104. Its totient is φ = 53479320.

The previous prime is 68631859. The next prime is 68631881. The reversal of 68631871 is 17813686.

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

It is a cyclic number.

It is not a de Polignac number, because 68631871 - 2⁹ = 68631359 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68631811) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 445585 + ... + 445738.

It is an arithmetic number, because the mean of its divisors is an integer number (10695888).

Almost surely, 2^68631871 is an apocalyptic number.

68631871 is a deficient number, since it is larger than the sum of its proper divisors (16935233).

68631871 is a wasteful number, since it uses less digits than its factorization.

68631871 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 891341.

The product of its digits is 48384, while the sum is 40.

The square root of 68631871 is about 8284.4354665843. The cubic root of 68631871 is about 409.4258690240.

The spelling of 68631871 in words is "sixty-eight million, six hundred thirty-one thousand, eight hundred seventy-one".