65601265 has 4 divisors (see below), whose sum is σ = 78721524. Its totient is φ = 52481008.

The previous prime is 65601253. The next prime is 65601269. The reversal of 65601265 is 56210656.

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 51940849 + 13660416 = 7207^2 + 3696^2 .

It is a cyclic number.

It is not a de Polignac number, because 65601265 - 2⁹ = 65600753 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (65601269) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6560122 + ... + 6560131.

It is an arithmetic number, because the mean of its divisors is an integer number (19680381).

Almost surely, 2^65601265 is an apocalyptic number.

It is an amenable number.

65601265 is a deficient number, since it is larger than the sum of its proper divisors (13120259).

65601265 is a wasteful number, since it uses less digits than its factorization.

65601265 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13120258.

The product of its (nonzero) digits is 10800, while the sum is 31.

The square root of 65601265 is about 8099.4607845214. The cubic root of 65601265 is about 403.3085274152.

The spelling of 65601265 in words is "sixty-five million, six hundred one thousand, two hundred sixty-five".