65365189 has 4 divisors (see below), whose sum is σ = 65943756. Its totient is φ = 64786624.

The previous prime is 65365177. The next prime is 65365207. The reversal of 65365189 is 98156356.

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 22724289 + 42640900 = 4767^2 + 6530^2 .

It is a cyclic number.

It is not a de Polignac number, because 65365189 - 2¹¹ = 65363141 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 (65365889) 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, 289114 + ... + 289339.

It is an arithmetic number, because the mean of its divisors is an integer number (16485939).

Almost surely, 2^65365189 is an apocalyptic number.

It is an amenable number.

65365189 is a deficient number, since it is larger than the sum of its proper divisors (578567).

65365189 is a wasteful number, since it uses less digits than its factorization.

65365189 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 578566.

The product of its digits is 194400, while the sum is 43.

The square root of 65365189 is about 8084.8740868365. The cubic root of 65365189 is about 402.8241571635.

The spelling of 65365189 in words is "sixty-five million, three hundred sixty-five thousand, one hundred eighty-nine".