65689568 has 24 divisors (see below), whose sum is σ = 147802032. Its totient is φ = 28152576.

The previous prime is 65689567. The next prime is 65689571. The reversal of 65689568 is 86598656.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65689567) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 146405 + ... + 146852.

It is an arithmetic number, because the mean of its divisors is an integer number (6158418).

Almost surely, 2^65689568 is an apocalyptic number.

It is an amenable number.

65689568 is an abundant number, since it is smaller than the sum of its proper divisors (82112464).

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

65689568 is a wasteful number, since it uses less digits than its factorization.

65689568 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 293274 (or 293266 counting only the distinct ones).

The product of its digits is 3110400, while the sum is 53.

The square root of 65689568 is about 8104.9101167132. The cubic root of 65689568 is about 403.4894049519.

The spelling of 65689568 in words is "sixty-five million, six hundred eighty-nine thousand, five hundred sixty-eight".