116220661 has 8 divisors (see below), whose sum is σ = 120579480. Its totient is φ = 111885312.

The previous prime is 116220659. The next prime is 116220673. The reversal of 116220661 is 166022611.

It can be written as a sum of positive squares in 4 ways, for example, as 6599761 + 109620900 = 2569^2 + 10470^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 116220661 - 2¹ = 116220659 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (116220641) 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, 4561 + ... + 15913.

It is an arithmetic number, because the mean of its divisors is an integer number (15072435).

Almost surely, 2^116220661 is an apocalyptic number.

It is an amenable number.

116220661 is a deficient number, since it is larger than the sum of its proper divisors (4358819).

116220661 is a wasteful number, since it uses less digits than its factorization.

116220661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11735.

The product of its (nonzero) digits is 864, while the sum is 25.

The square root of 116220661 is about 10780.5686770226. The cubic root of 116220661 is about 488.0089426046.

The spelling of 116220661 in words is "one hundred sixteen million, two hundred twenty thousand, six hundred sixty-one".