64835563 has 4 divisors (see below), whose sum is σ = 69822928. Its totient is φ = 59848200.

The previous prime is 64835557. The next prime is 64835591. The reversal of 64835563 is 36553846.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 64835563 - 2⁵ = 64835531 is a prime.

It is a Duffinian number.

It is a zygodrome in base 3.

It is not an unprimeable number, because it can be changed into a prime (64835963) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2493663 + ... + 2493688.

It is an arithmetic number, because the mean of its divisors is an integer number (17455732).

Almost surely, 2^64835563 is an apocalyptic number.

64835563 is a deficient number, since it is larger than the sum of its proper divisors (4987365).

64835563 is a wasteful number, since it uses less digits than its factorization.

64835563 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4987364.

The product of its digits is 259200, while the sum is 40.

The square root of 64835563 is about 8052.0533406082. The cubic root of 64835563 is about 401.7332351423.

The spelling of 64835563 in words is "sixty-four million, eight hundred thirty-five thousand, five hundred sixty-three".