64850563 has 4 divisors (see below), whose sum is σ = 68665320. Its totient is φ = 61035808.

The previous prime is 64850557. The next prime is 64850567. The reversal of 64850563 is 36505846.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-64850563 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (64850567) 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, 1907353 + ... + 1907386.

It is an arithmetic number, because the mean of its divisors is an integer number (17166330).

Almost surely, 2^64850563 is an apocalyptic number.

64850563 is a deficient number, since it is larger than the sum of its proper divisors (3814757).

64850563 is a wasteful number, since it uses less digits than its factorization.

64850563 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3814756.

The product of its (nonzero) digits is 86400, while the sum is 37.

The square root of 64850563 is about 8052.9847261745. The cubic root of 64850563 is about 401.7642136855.

The spelling of 64850563 in words is "sixty-four million, eight hundred fifty thousand, five hundred sixty-three".