1268704817 has 4 divisors (see below), whose sum is σ = 1323865920. Its totient is φ = 1213543716.

The previous prime is 1268704763. The next prime is 1268704873. The reversal of 1268704817 is 7184078621.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1268704817 - 2¹² = 1268700721 is a prime.

It is a super-2 number, since 2×1268704817² = 3219223825358006978, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1268704117) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27580517 + ... + 27580562.

It is an arithmetic number, because the mean of its divisors is an integer number (330966480).

Almost surely, 2^1268704817 is an apocalyptic number.

It is an amenable number.

1268704817 is a deficient number, since it is larger than the sum of its proper divisors (55161103).

1268704817 is an equidigital number, since it uses as much as digits as its factorization.

1268704817 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55161102.

The product of its (nonzero) digits is 150528, while the sum is 44.

The square root of 1268704817 is about 35618.8828713086. The cubic root of 1268704817 is about 1082.5638723697.

The spelling of 1268704817 in words is "one billion, two hundred sixty-eight million, seven hundred four thousand, eight hundred seventeen".