65218338 has 32 divisors (see below), whose sum is σ = 146435520. Its totient is φ = 21513600.

The previous prime is 65218313. The next prime is 65218339. The reversal of 65218338 is 83381256.

65218338 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×65218338² = 8506863222964488, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (65218339) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 988 + ... + 11463.

It is an arithmetic number, because the mean of its divisors is an integer number (4576110).

Almost surely, 2^65218338 is an apocalyptic number.

65218338 is an abundant number, since it is smaller than the sum of its proper divisors (81217182).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

65218338 is a wasteful number, since it uses less digits than its factorization.

65218338 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12559 (or 12553 counting only the distinct ones).

The product of its digits is 34560, while the sum is 36.

The square root of 65218338 is about 8075.7871442975. The cubic root of 65218338 is about 402.5222661705.

It can be divided in two parts, 65218 and 338, that added together give a palindrome (65556).

The spelling of 65218338 in words is "sixty-five million, two hundred eighteen thousand, three hundred thirty-eight".