268068643 has 4 divisors (see below), whose sum is σ = 268119720. Its totient is φ = 268017568.

The previous prime is 268068641. The next prime is 268068649. The reversal of 268068643 is 346860862.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 346860862 = 2 ⋅173430431.

It is a cyclic number.

It is not a de Polignac number, because 268068643 - 2¹ = 268068641 is a prime.

It is a super-2 number, since 2×268068643² = 143721594719722898, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 268068643.

It is not an unprimeable number, because it can be changed into a prime (268068641) 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, 16630 + ... + 28507.

It is an arithmetic number, because the mean of its divisors is an integer number (67029930).

Almost surely, 2^268068643 is an apocalyptic number.

268068643 is a deficient number, since it is larger than the sum of its proper divisors (51077).

268068643 is an equidigital number, since it uses as much as digits as its factorization.

268068643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51076.

The product of its (nonzero) digits is 331776, while the sum is 43.

The square root of 268068643 is about 16372.8019288086. The cubic root of 268068643 is about 644.7856131033.

The spelling of 268068643 in words is "two hundred sixty-eight million, sixty-eight thousand, six hundred forty-three".