65422231 has 12 divisors (see below), whose sum is σ = 77442352. Its totient is φ = 54137664.

The previous prime is 65422223. The next prime is 65422249. The reversal of 65422231 is 13222456.

It is not a de Polignac number, because 65422231 - 2³ = 65422223 is a prime.

It is a super-2 number, since 2×65422231² = 8560136618034722, which contains 22 as substring.

It is a hoax number, since the sum of its digits (25) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 65422196 and 65422205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65422831) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 331 + ... + 11443.

Almost surely, 2^65422231 is an apocalyptic number.

65422231 is a deficient number, since it is larger than the sum of its proper divisors (12020121).

65422231 is a wasteful number, since it uses less digits than its factorization.

65422231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11178 (or 11149 counting only the distinct ones).

The product of its digits is 2880, while the sum is 25.

The square root of 65422231 is about 8088.4010162702. The cubic root of 65422231 is about 402.9413001217.

Adding to 65422231 its reverse (13222456), we get a palindrome (78644687).

The spelling of 65422231 in words is "sixty-five million, four hundred twenty-two thousand, two hundred thirty-one".