116343661 has 4 divisors (see below), whose sum is σ = 132964192. Its totient is φ = 99723132.

The previous prime is 116343649. The next prime is 116343671. The reversal of 116343661 is 166343611.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 166343611 = 7 ⋅23763373.

It is a cyclic number.

It is not a de Polignac number, because 116343661 - 2¹³ = 116335469 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 (116343671) 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, 8310255 + ... + 8310268.

It is an arithmetic number, because the mean of its divisors is an integer number (33241048).

Almost surely, 2^116343661 is an apocalyptic number.

It is an amenable number.

116343661 is a deficient number, since it is larger than the sum of its proper divisors (16620531).

116343661 is an equidigital number, since it uses as much as digits as its factorization.

116343661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16620530.

The product of its digits is 7776, while the sum is 31.

The square root of 116343661 is about 10786.2718767886. The cubic root of 116343661 is about 488.1810403378.

The spelling of 116343661 in words is "one hundred sixteen million, three hundred forty-three thousand, six hundred sixty-one".