65663332 has 72 divisors (see below), whose sum is σ = 140652288. Its totient is φ = 26712000.

The previous prime is 65663291. The next prime is 65663347. The reversal of 65663332 is 23336656.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 613623 + ... + 613729.

It is an arithmetic number, because the mean of its divisors is an integer number (1953504).

Almost surely, 2^65663332 is an apocalyptic number.

65663332 is a gapful number since it is divisible by the number (62) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 65663332, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (70326144).

65663332 is an abundant number, since it is smaller than the sum of its proper divisors (74988956).

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

65663332 is a wasteful number, since it uses less digits than its factorization.

65663332 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 257 (or 248 counting only the distinct ones).

The product of its digits is 58320, while the sum is 34.

The square root of 65663332 is about 8103.2914300301. The cubic root of 65663332 is about 403.4356807559.

Adding to 65663332 its reverse (23336656), we get a palindrome (88999988).

The spelling of 65663332 in words is "sixty-five million, six hundred sixty-three thousand, three hundred thirty-two".