65565479 has 16 divisors (see below), whose sum is σ = 79795200. Its totient is φ = 53749080.

The previous prime is 65565439. The next prime is 65565503. The reversal of 65565479 is 97456556.

It is a happy number.

It is not a de Polignac number, because 65565479 - 2⁸ = 65565223 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 (65565439) 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, 3734 + ... + 12044.

It is an arithmetic number, because the mean of its divisors is an integer number (4987200).

Almost surely, 2^65565479 is an apocalyptic number.

65565479 is a deficient number, since it is larger than the sum of its proper divisors (14229721).

65565479 is an equidigital number, since it uses as much as digits as its factorization.

65565479 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8355 (or 8341 counting only the distinct ones).

The product of its digits is 1134000, while the sum is 47.

The square root of 65565479 is about 8097.2513237518. The cubic root of 65565479 is about 403.2351780971.

It can be divided in two parts, 6556547 and 9, that added together give a palindrome (6556556).

The spelling of 65565479 in words is "sixty-five million, five hundred sixty-five thousand, four hundred seventy-nine".