65564018 has 8 divisors (see below), whose sum is σ = 105911148. Its totient is φ = 30260304.

The previous prime is 65564011. The next prime is 65564029. The reversal of 65564018 is 81046556.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 65011969 + 552049 = 8063^2 + 743^2 .

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

It is not an unprimeable number, because it can be changed into a prime (65564011) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1260821 + ... + 1260872.

Almost surely, 2^65564018 is an apocalyptic number.

65564018 is a deficient number, since it is larger than the sum of its proper divisors (40347130).

65564018 is a wasteful number, since it uses less digits than its factorization.

65564018 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2521708.

The product of its (nonzero) digits is 28800, while the sum is 35.

The square root of 65564018 is about 8097.1611074499. The cubic root of 65564018 is about 403.2321829693.

The spelling of 65564018 in words is "sixty-five million, five hundred sixty-four thousand, eighteen".