68512223 has 4 divisors (see below), whose sum is σ = 73782408. Its totient is φ = 63242040.

The previous prime is 68512187. The next prime is 68512243. The reversal of 68512223 is 32221586.

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

It is a cyclic number.

It is not a de Polignac number, because 68512223 - 2¹⁰ = 68511199 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68512243) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2635073 + ... + 2635098.

It is an arithmetic number, because the mean of its divisors is an integer number (18445602).

Almost surely, 2^68512223 is an apocalyptic number.

68512223 is a deficient number, since it is larger than the sum of its proper divisors (5270185).

68512223 is a wasteful number, since it uses less digits than its factorization.

68512223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5270184.

The product of its digits is 5760, while the sum is 29.

The square root of 68512223 is about 8277.2110641206. The cubic root of 68512223 is about 409.1878091640.

It can be divided in two parts, 6851222 and 3, that multiplied together give a triangular number (20553666 = T₆₄₁₁).

The spelling of 68512223 in words is "sixty-eight million, five hundred twelve thousand, two hundred twenty-three".