64217284 has 12 divisors (see below), whose sum is σ = 112480704. Its totient is φ = 32079944.

The previous prime is 64217269. The next prime is 64217317. The reversal of 64217284 is 48271246.

It is a happy number.

64217284 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 3 ways as a sum of consecutive naturals, for example, 1672 + ... + 11455.

It is an arithmetic number, because the mean of its divisors is an integer number (9373392).

Almost surely, 2^64217284 is an apocalyptic number.

It is an amenable number.

64217284 is a deficient number, since it is larger than the sum of its proper divisors (48263420).

64217284 is a wasteful number, since it uses less digits than its factorization.

64217284 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14354 (or 14352 counting only the distinct ones).

The product of its digits is 21504, while the sum is 34.

The square root of 64217284 is about 8013.5687430757. The cubic root of 64217284 is about 400.4521636774.

The spelling of 64217284 in words is "sixty-four million, two hundred seventeen thousand, two hundred eighty-four".