116644321 has 2 divisors, whose sum is σ = 116644322. Its totient is φ = 116644320.

The previous prime is 116644309. The next prime is 116644349. The reversal of 116644321 is 123446611.

It is an a-pointer prime, because the next prime (116644349) can be obtained adding 116644321 to its sum of digits (28).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 71216721 + 45427600 = 8439^2 + 6740^2 .

It is an emirp because it is prime and its reverse (123446611) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 116644321 - 2¹³ = 116636129 is a prime.

It is equal to p_6661324 and since 116644321 and 6661324 have the same sum of digits, it is a Honaker prime.

It is a self number, because there is not a number n which added to its sum of digits gives 116644321.

It is not a weakly prime, because it can be changed into another prime (116644301) 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 as a sum of consecutive naturals, namely, 58322160 + 58322161.

It is an arithmetic number, because the mean of its divisors is an integer number (58322161).

Almost surely, 2^116644321 is an apocalyptic number.

It is an amenable number.

116644321 is a deficient number, since it is larger than the sum of its proper divisors (1).

116644321 is an equidigital number, since it uses as much as digits as its factorization.

116644321 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3456, while the sum is 28.

The square root of 116644321 is about 10800.2000444436. The cubic root of 116644321 is about 488.6012043480.

The spelling of 116644321 in words is "one hundred sixteen million, six hundred forty-four thousand, three hundred twenty-one".