263042065 has 64 divisors (see below), whose sum is σ = 389475072. Its totient is φ = 167961600.

The previous prime is 263042057. The next prime is 263042069. The reversal of 263042065 is 560240362.

It is a happy number.

It is not a de Polignac number, because 263042065 - 2³ = 263042057 is a prime.

It is a super-2 number, since 2×263042065² = 138382255918928450, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (263042069) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1613674 + ... + 1613836.

It is an arithmetic number, because the mean of its divisors is an integer number (6085548).

Almost surely, 2^263042065 is an apocalyptic number.

It is an amenable number.

263042065 is a deficient number, since it is larger than the sum of its proper divisors (126433007).

263042065 is a wasteful number, since it uses less digits than its factorization.

263042065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 290.

The product of its (nonzero) digits is 8640, while the sum is 28.

The square root of 263042065 is about 16218.5716078821. The cubic root of 263042065 is about 640.7300141628.

The spelling of 263042065 in words is "two hundred sixty-three million, forty-two thousand, sixty-five".