68626831 has 16 divisors (see below), whose sum is σ = 84672000. Its totient is φ = 54164448.

The previous prime is 68626829. The next prime is 68626843. The reversal of 68626831 is 13862686.

It is not a de Polignac number, because 68626831 - 2¹ = 68626829 is a prime.

It is a super-2 number, since 2×68626831² = 9419283866205122, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68626801) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 53880 + ... + 55138.

It is an arithmetic number, because the mean of its divisors is an integer number (5292000).

Almost surely, 2^68626831 is an apocalyptic number.

68626831 is a deficient number, since it is larger than the sum of its proper divisors (16045169).

68626831 is a wasteful number, since it uses less digits than its factorization.

68626831 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1878.

The product of its digits is 82944, while the sum is 40.

The square root of 68626831 is about 8284.1312761206. The cubic root of 68626831 is about 409.4158466789.

The spelling of 68626831 in words is "sixty-eight million, six hundred twenty-six thousand, eight hundred thirty-one".