65389221 has 8 divisors (see below), whose sum is σ = 96872960. Its totient is φ = 43592796.

The previous prime is 65389213. The next prime is 65389271. The reversal of 65389221 is 12298356.

It is not a de Polignac number, because 65389221 - 2³ = 65389213 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 (65389271) 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, 1210885 + ... + 1210938.

It is an arithmetic number, because the mean of its divisors is an integer number (12109120).

Almost surely, 2^65389221 is an apocalyptic number.

It is an amenable number.

65389221 is a deficient number, since it is larger than the sum of its proper divisors (31483739).

65389221 is a wasteful number, since it uses less digits than its factorization.

65389221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2421832 (or 2421826 counting only the distinct ones).

The product of its digits is 25920, while the sum is 36.

The square root of 65389221 is about 8086.3601824307. The cubic root of 65389221 is about 402.8735182182.

The spelling of 65389221 in words is "sixty-five million, three hundred eighty-nine thousand, two hundred twenty-one".