65161099 has 4 divisors (see below), whose sum is σ = 65492064. Its totient is φ = 64830136.

The previous prime is 65161081. The next prime is 65161121. The reversal of 65161099 is 99016156.

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 65161099 - 2¹¹ = 65159051 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (65161049) 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, 165187 + ... + 165580.

It is an arithmetic number, because the mean of its divisors is an integer number (16373016).

Almost surely, 2^65161099 is an apocalyptic number.

65161099 is a deficient number, since it is larger than the sum of its proper divisors (330965).

65161099 is a wasteful number, since it uses less digits than its factorization.

65161099 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 330964.

The product of its (nonzero) digits is 14580, while the sum is 37.

The square root of 65161099 is about 8072.2425013128. The cubic root of 65161099 is about 402.4044735559.

The spelling of 65161099 in words is "sixty-five million, one hundred sixty-one thousand, ninety-nine".