65690568 has 64 divisors (see below), whose sum is σ = 188784000. Its totient is φ = 21139776.

The previous prime is 65690561. The next prime is 65690579. The reversal of 65690568 is 86509656.

It is not an unprimeable number, because it can be changed into a prime (65690561) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1021 + ... + 11507.

It is an arithmetic number, because the mean of its divisors is an integer number (2949750).

Almost surely, 2^65690568 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 65690568, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (94392000).

65690568 is an abundant number, since it is smaller than the sum of its proper divisors (123093432).

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

65690568 is a wasteful number, since it uses less digits than its factorization.

65690568 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10531 (or 10521 counting only the distinct ones).

The product of its (nonzero) digits is 388800, while the sum is 45.

The square root of 65690568 is about 8104.9718074772. The cubic root of 65690568 is about 403.4914523970.

The spelling of 65690568 in words is "sixty-five million, six hundred ninety thousand, five hundred sixty-eight".