65275865 has 4 divisors (see below), whose sum is σ = 78331044. Its totient is φ = 52220688.

The previous prime is 65275843. The next prime is 65275871. The reversal of 65275865 is 56857256.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 9803161 + 55472704 = 3131^2 + 7448^2 .

It is a cyclic number.

It is not a de Polignac number, because 65275865 - 2¹⁰ = 65274841 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6527582 + ... + 6527591.

It is an arithmetic number, because the mean of its divisors is an integer number (19582761).

Almost surely, 2^65275865 is an apocalyptic number.

It is an amenable number.

65275865 is a deficient number, since it is larger than the sum of its proper divisors (13055179).

65275865 is a wasteful number, since it uses less digits than its factorization.

65275865 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13055178.

The product of its digits is 504000, while the sum is 44.

The square root of 65275865 is about 8079.3480553817. The cubic root of 65275865 is about 402.6405820414.

The spelling of 65275865 in words is "sixty-five million, two hundred seventy-five thousand, eight hundred sixty-five".