65609768 has 32 divisors (see below), whose sum is σ = 140909760. Its totient is φ = 28055040.

The previous prime is 65609767. The next prime is 65609779. The reversal of 65609768 is 86790656.

It is not an unprimeable number, because it can be changed into a prime (65609767) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 30488 + ... + 32568.

It is an arithmetic number, because the mean of its divisors is an integer number (4403430).

Almost surely, 2^65609768 is an apocalyptic number.

It is an amenable number.

65609768 is an abundant number, since it is smaller than the sum of its proper divisors (75299992).

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

65609768 is a wasteful number, since it uses less digits than its factorization.

65609768 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2657 (or 2653 counting only the distinct ones).

The product of its (nonzero) digits is 544320, while the sum is 47.

The square root of 65609768 is about 8099.9856789997. The cubic root of 65609768 is about 403.3259517959.

The spelling of 65609768 in words is "sixty-five million, six hundred nine thousand, seven hundred sixty-eight".