65244189 has 4 divisors (see below), whose sum is σ = 86992256. Its totient is φ = 43496124.

The previous prime is 65244167. The next prime is 65244199. The reversal of 65244189 is 98144256.

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 not a de Polignac number, because 65244189 - 2¹² = 65240093 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 (65244149) 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, 10874029 + ... + 10874034.

It is an arithmetic number, because the mean of its divisors is an integer number (21748064).

Almost surely, 2^65244189 is an apocalyptic number.

It is an amenable number.

65244189 is a deficient number, since it is larger than the sum of its proper divisors (21748067).

65244189 is a wasteful number, since it uses less digits than its factorization.

65244189 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21748066.

The product of its digits is 69120, while the sum is 39.

The square root of 65244189 is about 8077.3875108230. The cubic root of 65244189 is about 402.5754425667.

The spelling of 65244189 in words is "sixty-five million, two hundred forty-four thousand, one hundred eighty-nine".