65198736 has 80 divisors (see below), whose sum is σ = 192249600. Its totient is φ = 21140352.

The previous prime is 65198719. The next prime is 65198743. The reversal of 65198736 is 63789156.

It is a happy number.

65198736 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 65198691 and 65198700.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13945 + ... + 18023.

It is an arithmetic number, because the mean of its divisors is an integer number (2403120).

Almost surely, 2^65198736 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 65198736, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (96124800).

65198736 is an abundant number, since it is smaller than the sum of its proper divisors (127050864).

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

65198736 is a wasteful number, since it uses less digits than its factorization.

65198736 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4133 (or 4121 counting only the distinct ones).

The product of its digits is 272160, while the sum is 45.

The square root of 65198736 is about 8074.5734252653. The cubic root of 65198736 is about 402.4819348141.

The spelling of 65198736 in words is "sixty-five million, one hundred ninety-eight thousand, seven hundred thirty-six".