71268265 has 4 divisors (see below), whose sum is σ = 85521924. Its totient is φ = 57014608.

The previous prime is 71268251. The next prime is 71268269. The reversal of 71268265 is 56286217.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 56286217 = 13 ⋅4329709.

It can be written as a sum of positive squares in 2 ways, for example, as 14295961 + 56972304 = 3781^2 + 7548^2 .

It is a cyclic number.

It is not a de Polignac number, because 71268265 - 2⁷ = 71268137 is a prime.

It is a super-2 number, since 2×71268265² = 10158331192220450, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (71268269) 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, 7126822 + ... + 7126831.

It is an arithmetic number, because the mean of its divisors is an integer number (21380481).

Almost surely, 2^71268265 is an apocalyptic number.

It is an amenable number.

71268265 is a deficient number, since it is larger than the sum of its proper divisors (14253659).

71268265 is a wasteful number, since it uses less digits than its factorization.

71268265 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14253658.

The product of its digits is 40320, while the sum is 37.

The square root of 71268265 is about 8442.0533639631. The cubic root of 71268265 is about 414.6026389558.

The spelling of 71268265 in words is "seventy-one million, two hundred sixty-eight thousand, two hundred sixty-five".