65293221 has 16 divisors (see below), whose sum is σ = 101809664. Its totient is φ = 36442224.

The previous prime is 65293213. The next prime is 65293247. The reversal of 65293221 is 12239256.

It is not a de Polignac number, because 65293221 - 2³ = 65293213 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 (65293201) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 35251 + ... + 37056.

It is an arithmetic number, because the mean of its divisors is an integer number (6363104).

Almost surely, 2^65293221 is an apocalyptic number.

It is an amenable number.

65293221 is a deficient number, since it is larger than the sum of its proper divisors (36516443).

65293221 is a wasteful number, since it uses less digits than its factorization.

65293221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72360.

The product of its digits is 6480, while the sum is 30.

The square root of 65293221 is about 8080.4220805599. The cubic root of 65293221 is about 402.6762645032.

The spelling of 65293221 in words is "sixty-five million, two hundred ninety-three thousand, two hundred twenty-one".