65965798 has 8 divisors (see below), whose sum is σ = 99261792. Its totient is φ = 32878536.

The previous prime is 65965787. The next prime is 65965811. The reversal of 65965798 is 89756956.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 51390 + ... + 52657.

It is an arithmetic number, because the mean of its divisors is an integer number (12407724).

Almost surely, 2^65965798 is an apocalyptic number.

65965798 is a deficient number, since it is larger than the sum of its proper divisors (33295994).

65965798 is a wasteful number, since it uses less digits than its factorization.

65965798 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 104366.

The product of its digits is 4082400, while the sum is 55.

The square root of 65965798 is about 8121.9331442705. The cubic root of 65965798 is about 404.0541826816.

The spelling of 65965798 in words is "sixty-five million, nine hundred sixty-five thousand, seven hundred ninety-eight".