65816197 has 8 divisors (see below), whose sum is σ = 69854400. Its totient is φ = 61796544.

The previous prime is 65816173. The next prime is 65816221. The reversal of 65816197 is 79161856.

It is a happy number.

65816197 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (65816173) and next prime (65816221).

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

It is a cyclic number.

It is not a de Polignac number, because 65816197 - 2¹⁵ = 65783429 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65816137) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 3054 + ... + 11872.

It is an arithmetic number, because the mean of its divisors is an integer number (8731800).

Almost surely, 2^65816197 is an apocalyptic number.

It is an amenable number.

65816197 is a deficient number, since it is larger than the sum of its proper divisors (4038203).

65816197 is a wasteful number, since it uses less digits than its factorization.

65816197 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9275.

The product of its digits is 90720, while the sum is 43.

The square root of 65816197 is about 8112.7182251080. The cubic root of 65816197 is about 403.7485057791.

The spelling of 65816197 in words is "sixty-five million, eight hundred sixteen thousand, one hundred ninety-seven".