65962221 has 24 divisors (see below), whose sum is σ = 95780736. Its totient is φ = 40360320.

The previous prime is 65962217. The next prime is 65962223. The reversal of 65962221 is 12226956.

It is not a de Polignac number, because 65962221 - 2² = 65962217 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65962223) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 142236 + ... + 142698.

It is an arithmetic number, because the mean of its divisors is an integer number (3990864).

Almost surely, 2^65962221 is an apocalyptic number.

It is an amenable number.

65962221 is a deficient number, since it is larger than the sum of its proper divisors (29818515).

65962221 is a wasteful number, since it uses less digits than its factorization.

65962221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 773 (or 760 counting only the distinct ones).

The product of its digits is 12960, while the sum is 33.

The square root of 65962221 is about 8121.7129350895. The cubic root of 65962221 is about 404.0468792609.

The spelling of 65962221 in words is "sixty-five million, nine hundred sixty-two thousand, two hundred twenty-one".