68866231 has 4 divisors (see below), whose sum is σ = 78704272. Its totient is φ = 59028192.

The previous prime is 68866219. The next prime is 68866243. The reversal of 68866231 is 13266886.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (68866219) and next prime (68866243).

It is a cyclic number.

It is not a de Polignac number, because 68866231 - 2⁷ = 68866103 is a prime.

It is a super-2 number, since 2×68866231² = 9485115544290722, 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 (68866261) 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, 4919010 + ... + 4919023.

It is an arithmetic number, because the mean of its divisors is an integer number (19676068).

Almost surely, 2^68866231 is an apocalyptic number.

68866231 is a deficient number, since it is larger than the sum of its proper divisors (9838041).

68866231 is an equidigital number, since it uses as much as digits as its factorization.

68866231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9838040.

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

The square root of 68866231 is about 8298.5680090001. The cubic root of 68866231 is about 409.8913672139.

The spelling of 68866231 in words is "sixty-eight million, eight hundred sixty-six thousand, two hundred thirty-one".