113661663 has 8 divisors (see below), whose sum is σ = 153049776. Its totient is φ = 75024000.

The previous prime is 113661661. The next prime is 113661673. The reversal of 113661663 is 366166311.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 113661663 - 2¹ = 113661661 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (113661661) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 187258 + ... + 187863.

It is an arithmetic number, because the mean of its divisors is an integer number (19131222).

Almost surely, 2^113661663 is an apocalyptic number.

113661663 is a deficient number, since it is larger than the sum of its proper divisors (39388113).

113661663 is a wasteful number, since it uses less digits than its factorization.

113661663 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 375225.

The product of its digits is 11664, while the sum is 33.

The square root of 113661663 is about 10661.2223970800. Note that the first 3 decimals coincide. The cubic root of 113661663 is about 484.4005958198.

The spelling of 113661663 in words is "one hundred thirteen million, six hundred sixty-one thousand, six hundred sixty-three".