65196511 has 4 divisors (see below), whose sum is σ = 65216592. Its totient is φ = 65176432.

The previous prime is 65196499. The next prime is 65196517. The reversal of 65196511 is 11569156.

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

It is a cyclic number.

It is not a de Polignac number, because 65196511 - 2¹¹ = 65194463 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 (65196517) 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, 3931 + ... + 12076.

It is an arithmetic number, because the mean of its divisors is an integer number (16304148).

Almost surely, 2^65196511 is an apocalyptic number.

65196511 is a deficient number, since it is larger than the sum of its proper divisors (20081).

65196511 is a wasteful number, since it uses less digits than its factorization.

65196511 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20080.

The product of its digits is 8100, while the sum is 34.

The square root of 65196511 is about 8074.4356459136. The cubic root of 65196511 is about 402.4773563384.

The spelling of 65196511 in words is "sixty-five million, one hundred ninety-six thousand, five hundred eleven".