65018196 has 18 divisors (see below), whose sum is σ = 164351642. Its totient is φ = 21672720.

The previous prime is 65018189. The next prime is 65018197. The reversal of 65018196 is 69181056.

It can be written as a sum of positive squares in only one way, i.e., 55800900 + 9217296 = 7470^2 + 3036^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a super-2 number, since 2×65018196² = 8454731622188832, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 1806061 = 65018196 / (6 + 5 + 0 + 1 + 8 + 1 + 9 + 6).

It is a self number, because there is not a number n which added to its sum of digits gives 65018196.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65018197) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 902995 + ... + 903066.

Almost surely, 2^65018196 is an apocalyptic number.

It is an amenable number.

65018196 is an abundant number, since it is smaller than the sum of its proper divisors (99333446).

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

65018196 is a wasteful number, since it uses less digits than its factorization.

65018196 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1806071 (or 1806066 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 36.

The square root of 65018196 is about 8063.3861373495. The cubic root of 65018196 is about 402.1100908846.

The spelling of 65018196 in words is "sixty-five million, eighteen thousand, one hundred ninety-six".