64217289 has 8 divisors (see below), whose sum is σ = 86901280. Its totient is φ = 42172416.

The previous prime is 64217269. The next prime is 64217317. The reversal of 64217289 is 98271246.

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

It is not a de Polignac number, because 64217289 - 2⁷ = 64217161 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (64217249) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 159544 + ... + 159945.

It is an arithmetic number, because the mean of its divisors is an integer number (10862660).

Almost surely, 2^64217289 is an apocalyptic number.

It is an amenable number.

64217289 is a deficient number, since it is larger than the sum of its proper divisors (22683991).

64217289 is a wasteful number, since it uses less digits than its factorization.

64217289 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 319559.

The product of its digits is 48384, while the sum is 39.

The square root of 64217289 is about 8013.5690550466. The cubic root of 64217289 is about 400.4521740706.

The spelling of 64217289 in words is "sixty-four million, two hundred seventeen thousand, two hundred eighty-nine".