65769221 has 8 divisors (see below), whose sum is σ = 76699200. Its totient is φ = 56373324.

The previous prime is 65769211. The next prime is 65769227. The reversal of 65769221 is 12296756.

It is a happy number.

It is not a de Polignac number, because 65769221 - 2⁶ = 65769157 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65769227) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 95531 + ... + 96216.

It is an arithmetic number, because the mean of its divisors is an integer number (9587400).

Almost surely, 2^65769221 is an apocalyptic number.

It is an amenable number.

65769221 is a deficient number, since it is larger than the sum of its proper divisors (10929979).

65769221 is an equidigital number, since it uses as much as digits as its factorization.

65769221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 191768 (or 191754 counting only the distinct ones).

The product of its digits is 45360, while the sum is 38.

The square root of 65769221 is about 8109.8225011402. The cubic root of 65769221 is about 403.6524250528.

The spelling of 65769221 in words is "sixty-five million, seven hundred sixty-nine thousand, two hundred twenty-one".