1268275065 has 16 divisors (see below), whose sum is σ = 2033634048. Its totient is φ = 674948736.

The previous prime is 1268275031. The next prime is 1268275087. The reversal of 1268275065 is 5605728621.

It is not a de Polignac number, because 1268275065 - 2²³ = 1259886457 is a prime.

It is a Curzon number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 84364 + ... + 98253.

It is an arithmetic number, because the mean of its divisors is an integer number (127102128).

Almost surely, 2^1268275065 is an apocalyptic number.

1268275065 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1268275065 is a deficient number, since it is larger than the sum of its proper divisors (765358983).

1268275065 is a wasteful number, since it uses less digits than its factorization.

1268275065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 183088.

The product of its (nonzero) digits is 201600, while the sum is 42.

The square root of 1268275065 is about 35612.8497174826. The cubic root of 1268275065 is about 1082.4416252499.

The spelling of 1268275065 in words is "one billion, two hundred sixty-eight million, two hundred seventy-five thousand, sixty-five".