13840563 has 16 divisors (see below), whose sum is σ = 20390400. Its totient is φ = 8280480.

The previous prime is 13840559. The next prime is 13840571. The reversal of 13840563 is 36504831.

13840563 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 13840563 - 2² = 13840559 is a prime.

It is a super-2 number, since 2×13840563² = 383122368313938, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 13840563.

It is not an unprimeable number, because it can be changed into a prime (13840523) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 48 + ... + 5261.

It is an arithmetic number, because the mean of its divisors is an integer number (1274400).

Almost surely, 2^13840563 is an apocalyptic number.

13840563 is a deficient number, since it is larger than the sum of its proper divisors (6549837).

13840563 is a wasteful number, since it uses less digits than its factorization.

13840563 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5402.

The product of its (nonzero) digits is 8640, while the sum is 30.

The square root of 13840563 is about 3720.2907144469. The cubic root of 13840563 is about 240.0958124393.

The spelling of 13840563 in words is "thirteen million, eight hundred forty thousand, five hundred sixty-three".