65118061 has 4 divisors (see below), whose sum is σ = 65170332. Its totient is φ = 65065792.

The previous prime is 65118029. The next prime is 65118071. The reversal of 65118061 is 16081156.

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 16048036 + 49070025 = 4006^2 + 7005^2 .

It is a cyclic number.

It is not a de Polignac number, because 65118061 - 2⁵ = 65118029 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 (65118071) 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, 24220 + ... + 26773.

It is an arithmetic number, because the mean of its divisors is an integer number (16292583).

Almost surely, 2^65118061 is an apocalyptic number.

It is an amenable number.

65118061 is a deficient number, since it is larger than the sum of its proper divisors (52271).

65118061 is a wasteful number, since it uses less digits than its factorization.

65118061 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52270.

The product of its (nonzero) digits is 1440, while the sum is 28.

The square root of 65118061 is about 8069.5762590114. The cubic root of 65118061 is about 402.3158598569.

The spelling of 65118061 in words is "sixty-five million, one hundred eighteen thousand, sixty-one".