116778589 has 2 divisors, whose sum is σ = 116778590. Its totient is φ = 116778588.

The previous prime is 116778587. The next prime is 116778631. The reversal of 116778589 is 985877611.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 98843364 + 17935225 = 9942^2 + 4235^2 .

It is a cyclic number.

It is not a de Polignac number, because 116778589 - 2¹ = 116778587 is a prime.

Together with 116778587, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (116778587) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 58389294 + 58389295.

It is an arithmetic number, because the mean of its divisors is an integer number (58389295).

Almost surely, 2^116778589 is an apocalyptic number.

It is an amenable number.

116778589 is a deficient number, since it is larger than the sum of its proper divisors (1).

116778589 is an equidigital number, since it uses as much as digits as its factorization.

116778589 is an evil number, because the sum of its binary digits is even.

The product of its digits is 846720, while the sum is 52.

The square root of 116778589 is about 10806.4142526557. The cubic root of 116778589 is about 488.7886069585.

The spelling of 116778589 in words is "one hundred sixteen million, seven hundred seventy-eight thousand, five hundred eighty-nine".