65261117 has 4 divisors (see below), whose sum is σ = 65281536. Its totient is φ = 65240700.

The previous prime is 65261093. The next prime is 65261153. The reversal of 65261117 is 71116256.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 65261117 - 2¹² = 65257021 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 65261117.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65261167) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4259 + ... + 12192.

It is an arithmetic number, because the mean of its divisors is an integer number (16320384).

Almost surely, 2^65261117 is an apocalyptic number.

It is an amenable number.

65261117 is a deficient number, since it is larger than the sum of its proper divisors (20419).

65261117 is a wasteful number, since it uses less digits than its factorization.

65261117 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20418.

The product of its digits is 2520, while the sum is 29.

The square root of 65261117 is about 8078.4353064192. The cubic root of 65261117 is about 402.6102564350.

The spelling of 65261117 in words is "sixty-five million, two hundred sixty-one thousand, one hundred seventeen".