268704019 has 2 divisors, whose sum is σ = 268704020. Its totient is φ = 268704018.

The previous prime is 268704017. The next prime is 268704089. The reversal of 268704019 is 910407862.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 268704019 - 2¹ = 268704017 is a prime.

It is a super-2 number, since 2×268704019² = 144403699653504722, which contains 22 as substring.

Together with 268704017, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (268704017) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 134352009 + 134352010.

It is an arithmetic number, because the mean of its divisors is an integer number (134352010).

Almost surely, 2^268704019 is an apocalyptic number.

268704019 is a deficient number, since it is larger than the sum of its proper divisors (1).

268704019 is an equidigital number, since it uses as much as digits as its factorization.

268704019 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 24192, while the sum is 37.

The square root of 268704019 is about 16392.1938434122. The cubic root of 268704019 is about 645.2946345356.

The spelling of 268704019 in words is "two hundred sixty-eight million, seven hundred four thousand, nineteen".