65217249 has 12 divisors (see below), whose sum is σ = 95084496. Its totient is φ = 43071192.

The previous prime is 65217239. The next prime is 65217277. The reversal of 65217249 is 94271256.

65217249 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 65217249 - 2⁴ = 65217233 is a prime.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (65217239) 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 11 ways as a sum of consecutive naturals, for example, 32899 + ... + 34824.

It is an arithmetic number, because the mean of its divisors is an integer number (7923708).

Almost surely, 2^65217249 is an apocalyptic number.

It is an amenable number.

65217249 is a deficient number, since it is larger than the sum of its proper divisors (29867247).

65217249 is a wasteful number, since it uses less digits than its factorization.

65217249 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67836 (or 67833 counting only the distinct ones).

The product of its digits is 30240, while the sum is 36.

The square root of 65217249 is about 8075.7197202478. The cubic root of 65217249 is about 402.5200257516.

The spelling of 65217249 in words is "sixty-five million, two hundred seventeen thousand, two hundred forty-nine".