68716831 has 8 divisors (see below), whose sum is σ = 69333264. Its totient is φ = 68103360.

The previous prime is 68716829. The next prime is 68716849. The reversal of 68716831 is 13861786.

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 68716831 - 2¹ = 68716829 is a prime.

It is a super-2 number, since 2×68716831² = 9444005725365122, 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 (68716891) 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, 79755 + ... + 80611.

It is an arithmetic number, because the mean of its divisors is an integer number (8666658).

Almost surely, 2^68716831 is an apocalyptic number.

68716831 is a deficient number, since it is larger than the sum of its proper divisors (616433).

68716831 is a wasteful number, since it uses less digits than its factorization.

68716831 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1481.

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

The square root of 68716831 is about 8289.5615686235. The cubic root of 68716831 is about 409.5947433274.

The spelling of 68716831 in words is "sixty-eight million, seven hundred sixteen thousand, eight hundred thirty-one".