65071565 has 16 divisors (see below), whose sum is σ = 84260736. Its totient is φ = 47956800.

The previous prime is 65071553. The next prime is 65071613. The reversal of 65071565 is 56517056.

It is not a de Polignac number, because 65071565 - 2¹⁰ = 65070541 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 62600 + ... + 63630.

It is an arithmetic number, because the mean of its divisors is an integer number (5266296).

Almost surely, 2^65071565 is an apocalyptic number.

65071565 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

It is an amenable number.

65071565 is a deficient number, since it is larger than the sum of its proper divisors (19189171).

65071565 is a wasteful number, since it uses less digits than its factorization.

65071565 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2020.

The product of its (nonzero) digits is 31500, while the sum is 35.

The square root of 65071565 is about 8066.6948002264. The cubic root of 65071565 is about 402.2200823726.

The spelling of 65071565 in words is "sixty-five million, seventy-one thousand, five hundred sixty-five".