116643566 has 32 divisors (see below), whose sum is σ = 196172928. Its totient is φ = 51667200.

The previous prime is 116643559. The next prime is 116643577. The reversal of 116643566 is 665346611.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 63866 + ... + 65666.

It is an arithmetic number, because the mean of its divisors is an integer number (6130404).

Almost surely, 2^116643566 is an apocalyptic number.

116643566 is a deficient number, since it is larger than the sum of its proper divisors (79529362).

116643566 is a wasteful number, since it uses less digits than its factorization.

116643566 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1916.

The product of its digits is 77760, while the sum is 38.

The square root of 116643566 is about 10800.1650913308. The cubic root of 116643566 is about 488.6001501612.

The spelling of 116643566 in words is "one hundred sixteen million, six hundred forty-three thousand, five hundred sixty-six".