84840563 has 4 divisors (see below), whose sum is σ = 84982800. Its totient is φ = 84698328.

The previous prime is 84840551. The next prime is 84840571. The reversal of 84840563 is 36504848.

It is a happy number.

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 84840563 - 2¹⁶ = 84775027 is a prime.

It is a super-3 number, since 3×84840563³ (a number of 25 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (84840163) 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, 70220 + ... + 71417.

It is an arithmetic number, because the mean of its divisors is an integer number (21245700).

Almost surely, 2^84840563 is an apocalyptic number.

84840563 is a deficient number, since it is larger than the sum of its proper divisors (142237).

84840563 is a wasteful number, since it uses less digits than its factorization.

84840563 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 142236.

The product of its (nonzero) digits is 92160, while the sum is 38.

The square root of 84840563 is about 9210.8937134243. The cubic root of 84840563 is about 439.4078863938.

The spelling of 84840563 in words is "eighty-four million, eight hundred forty thousand, five hundred sixty-three".