116984561 has 2 divisors, whose sum is σ = 116984562. Its totient is φ = 116984560.

The previous prime is 116984557. The next prime is 116984573. The reversal of 116984561 is 165489611.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 116208400 + 776161 = 10780^2 + 881^2 .

It is a cyclic number.

It is not a de Polignac number, because 116984561 - 2² = 116984557 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (116984591) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 58492280 + 58492281.

It is an arithmetic number, because the mean of its divisors is an integer number (58492281).

Almost surely, 2^116984561 is an apocalyptic number.

It is an amenable number.

116984561 is a deficient number, since it is larger than the sum of its proper divisors (1).

116984561 is an equidigital number, since it uses as much as digits as its factorization.

116984561 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 51840, while the sum is 41.

The square root of 116984561 is about 10815.9401348195. The cubic root of 116984561 is about 489.0758103894.

The spelling of 116984561 in words is "one hundred sixteen million, nine hundred eighty-four thousand, five hundred sixty-one".