116556681 has 8 divisors (see below), whose sum is σ = 155463264. Its totient is φ = 77677280.

The previous prime is 116556673. The next prime is 116556689. The reversal of 116556681 is 186655611.

It is an interprime number because it is at equal distance from previous prime (116556673) and next prime (116556689).

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 116556681 - 2³ = 116556673 is a prime.

It is a super-2 number, since 2×116556681² = 27170919771471522, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (116556689) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7525 + ... + 17021.

It is an arithmetic number, because the mean of its divisors is an integer number (19432908).

Almost surely, 2^116556681 is an apocalyptic number.

It is an amenable number.

116556681 is a deficient number, since it is larger than the sum of its proper divisors (38906583).

116556681 is an equidigital number, since it uses as much as digits as its factorization.

116556681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13591.

The product of its digits is 43200, while the sum is 39.

The square root of 116556681 is about 10796.1419497893. The cubic root of 116556681 is about 488.4788045087.

It can be divided in two parts, 11655 and 6681, that added together give a triangular number (18336 = T₁₉₁).

The spelling of 116556681 in words is "one hundred sixteen million, five hundred fifty-six thousand, six hundred eighty-one".