111640563 has 12 divisors (see below), whose sum is σ = 161725200. Its totient is φ = 74211696.

The previous prime is 111640541. The next prime is 111640577. The reversal of 111640563 is 365046111.

111640563 is a `hidden beast` number, since 1 + 11 + 640 + 5 + 6 + 3 = 666.

It is not a de Polignac number, because 111640563 - 2¹⁶ = 111575027 is a prime.

It is not an unprimeable number, because it can be changed into a prime (111640583) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 14631 + ... + 20912.

It is an arithmetic number, because the mean of its divisors is an integer number (13477100).

Almost surely, 2^111640563 is an apocalyptic number.

111640563 is a deficient number, since it is larger than the sum of its proper divisors (50084637).

111640563 is a wasteful number, since it uses less digits than its factorization.

111640563 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35898 (or 35895 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 27.

The square root of 111640563 is about 10566.0097955662. The cubic root of 111640563 is about 481.5122488578.

Adding to 111640563 its reverse (365046111), we get a palindrome (476686674).

The spelling of 111640563 in words is "one hundred eleven million, six hundred forty thousand, five hundred sixty-three".