63564217 has 8 divisors (see below), whose sum is σ = 64211400. Its totient is φ = 62920704.

The previous prime is 63564209. The next prime is 63564223. The reversal of 63564217 is 71246536.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 22553001 + 41011216 = 4749^2 + 6404^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 63564217 - 2³ = 63564209 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (63564517) 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, 44409 + ... + 45817.

It is an arithmetic number, because the mean of its divisors is an integer number (8026425).

Almost surely, 2^63564217 is an apocalyptic number.

It is an amenable number.

63564217 is a deficient number, since it is larger than the sum of its proper divisors (647183).

63564217 is a wasteful number, since it uses less digits than its factorization.

63564217 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1835.

The product of its digits is 30240, while the sum is 34.

The square root of 63564217 is about 7972.7170400059. The cubic root of 63564217 is about 399.0900502985.

The spelling of 63564217 in words is "sixty-three million, five hundred sixty-four thousand, two hundred seventeen".