116669881 has 4 divisors (see below), whose sum is σ = 118582564. Its totient is φ = 114757200.

The previous prime is 116669849. The next prime is 116669893. The reversal of 116669881 is 188966611.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 188966611 = 17 ⋅11115683.

It can be written as a sum of positive squares in 2 ways, for example, as 52925625 + 63744256 = 7275^2 + 7984^2 .

It is a cyclic number.

It is not a de Polignac number, because 116669881 - 2⁵ = 116669849 is a prime.

It is a super-2 number, since 2×116669881² = 27223722265108322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (116669821) 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, 956250 + ... + 956371.

It is an arithmetic number, because the mean of its divisors is an integer number (29645641).

Almost surely, 2^116669881 is an apocalyptic number.

It is an amenable number.

116669881 is a deficient number, since it is larger than the sum of its proper divisors (1912683).

116669881 is an equidigital number, since it uses as much as digits as its factorization.

116669881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1912682.

The product of its digits is 124416, while the sum is 46.

The square root of 116669881 is about 10801.3832910419. The cubic root of 116669881 is about 488.6368904251.

The spelling of 116669881 in words is "one hundred sixteen million, six hundred sixty-nine thousand, eight hundred eighty-one".