65469221 has 4 divisors (see below), whose sum is σ = 65902944. Its totient is φ = 65035500.

The previous prime is 65469203. The next prime is 65469233. The reversal of 65469221 is 12296456.

It is a happy number.

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 a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-65469221 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 (65469281) 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, 216635 + ... + 216936.

It is an arithmetic number, because the mean of its divisors is an integer number (16475736).

Almost surely, 2^65469221 is an apocalyptic number.

It is an amenable number.

65469221 is a deficient number, since it is larger than the sum of its proper divisors (433723).

65469221 is a wasteful number, since it uses less digits than its factorization.

65469221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 433722.

The product of its digits is 25920, while the sum is 35.

The square root of 65469221 is about 8091.3052717099. The cubic root of 65469221 is about 403.0377488874.

The spelling of 65469221 in words is "sixty-five million, four hundred sixty-nine thousand, two hundred twenty-one".