116642605 has 4 divisors (see below), whose sum is σ = 139971132. Its totient is φ = 93314080.

The previous prime is 116642569. The next prime is 116642609. The reversal of 116642605 is 506246611.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 62678889 + 53963716 = 7917^2 + 7346^2 .

It is not a de Polignac number, because 116642605 - 2¹⁵ = 116609837 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (116642609) 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 3 ways as a sum of consecutive naturals, for example, 11664256 + ... + 11664265.

It is an arithmetic number, because the mean of its divisors is an integer number (34992783).

Almost surely, 2^116642605 is an apocalyptic number.

It is an amenable number.

116642605 is a deficient number, since it is larger than the sum of its proper divisors (23328527).

116642605 is an equidigital number, since it uses as much as digits as its factorization.

116642605 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23328526.

The product of its (nonzero) digits is 8640, while the sum is 31.

The square root of 116642605 is about 10800.1206011785. The cubic root of 116642605 is about 488.5988083355.

The spelling of 116642605 in words is "one hundred sixteen million, six hundred forty-two thousand, six hundred five".