65659968 has 168 divisors, whose sum is σ = 210958176. Its totient is φ = 19353600.

The previous prime is 65659943. The next prime is 65659969. The reversal of 65659968 is 86995656.

It is a super-2 number, since 2×65659968² = 8622462795522048, which contains 22 as substring.

Its product of digits (3499200) is a multiple of the sum of its prime divisors (300).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65659969) 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, 272328 + ... + 272568.

Almost surely, 2^65659968 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 65659968, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (105479088).

65659968 is an abundant number, since it is smaller than the sum of its proper divisors (145298208).

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

65659968 is a wasteful number, since it uses less digits than its factorization.

65659968 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 313 (or 300 counting only the distinct ones).

The product of its digits is 3499200, while the sum is 54.

The square root of 65659968 is about 8103.0838573965. The cubic root of 65659968 is about 403.4287911634.

The spelling of 65659968 in words is "sixty-five million, six hundred fifty-nine thousand, nine hundred sixty-eight".