64217441 has 12 divisors (see below), whose sum is σ = 66568320. Its totient is φ = 61927320.

The previous prime is 64217437. The next prime is 64217453. The reversal of 64217441 is 14471246.

It is a happy number.

It is not a de Polignac number, because 64217441 - 2² = 64217437 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (64217401) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 600110 + ... + 600216.

It is an arithmetic number, because the mean of its divisors is an integer number (5547360).

Almost surely, 2^64217441 is an apocalyptic number.

It is an amenable number.

64217441 is a deficient number, since it is larger than the sum of its proper divisors (2350879).

64217441 is an equidigital number, since it uses as much as digits as its factorization.

64217441 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 364 (or 257 counting only the distinct ones).

The product of its digits is 5376, while the sum is 29.

The square root of 64217441 is about 8013.5785389550. The cubic root of 64217441 is about 400.4524900223.

Adding to 64217441 its reverse (14471246), we get a palindrome (78688687).

The spelling of 64217441 in words is "sixty-four million, two hundred seventeen thousand, four hundred forty-one".