71959565 has 16 divisors (see below), whose sum is σ = 89030016. Its totient is φ = 55809600.

The previous prime is 71959553. The next prime is 71959567. The reversal of 71959565 is 56595917.

It is not a de Polignac number, because 71959565 - 2⁴ = 71959549 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71959567) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19994 + ... + 23316.

It is an arithmetic number, because the mean of its divisors is an integer number (5564376).

Almost surely, 2^71959565 is an apocalyptic number.

It is an amenable number.

71959565 is a deficient number, since it is larger than the sum of its proper divisors (17070451).

71959565 is a wasteful number, since it uses less digits than its factorization.

71959565 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3460.

The product of its digits is 425250, while the sum is 47.

The square root of 71959565 is about 8482.8983843967. The cubic root of 71959565 is about 415.9388720740.

The spelling of 71959565 in words is "seventy-one million, nine hundred fifty-nine thousand, five hundred sixty-five".