68636231 has 4 divisors (see below), whose sum is σ = 68653032. Its totient is φ = 68619432.

The previous prime is 68636171. The next prime is 68636237. The reversal of 68636231 is 13263686.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 68636231 - 2¹⁴ = 68619847 is a prime.

It is a super-2 number, since 2×68636231² = 9421864411770722, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 68636191 and 68636200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68636237) 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 3 ways as a sum of consecutive naturals, for example, 2120 + ... + 11906.

It is an arithmetic number, because the mean of its divisors is an integer number (17163258).

Almost surely, 2^68636231 is an apocalyptic number.

68636231 is a deficient number, since it is larger than the sum of its proper divisors (16801).

68636231 is an equidigital number, since it uses as much as digits as its factorization.

68636231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16800.

The product of its digits is 31104, while the sum is 35.

The square root of 68636231 is about 8284.6986064672. The cubic root of 68636231 is about 409.4345387521.

The spelling of 68636231 in words is "sixty-eight million, six hundred thirty-six thousand, two hundred thirty-one".