64201217 has 4 divisors (see below), whose sum is σ = 66272256. Its totient is φ = 62130180.

The previous prime is 64201199. The next prime is 64201229. The reversal of 64201217 is 71210246.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 64201217 - 2⁶ = 64201153 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 64201192 and 64201201.

It is not an unprimeable number, because it can be changed into a prime (64201297) 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 3 ways as a sum of consecutive naturals, for example, 1035473 + ... + 1035534.

It is an arithmetic number, because the mean of its divisors is an integer number (16568064).

Almost surely, 2^64201217 is an apocalyptic number.

It is an amenable number.

64201217 is a deficient number, since it is larger than the sum of its proper divisors (2071039).

64201217 is a wasteful number, since it uses less digits than its factorization.

64201217 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2071038.

The product of its (nonzero) digits is 672, while the sum is 23.

The square root of 64201217 is about 8012.5661931743. The cubic root of 64201217 is about 400.4187635231.

The spelling of 64201217 in words is "sixty-four million, two hundred one thousand, two hundred seventeen".