116660009 has 2 divisors, whose sum is σ = 116660010. Its totient is φ = 116660008.

The previous prime is 116660003. The next prime is 116660017. The reversal of 116660009 is 900066611.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 112954384 + 3705625 = 10628^2 + 1925^2 .

It is a cyclic number.

It is not a de Polignac number, because 116660009 - 2⁴ = 116659993 is a prime.

It is not a weakly prime, because it can be changed into another prime (116660003) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 58330004 + 58330005.

It is an arithmetic number, because the mean of its divisors is an integer number (58330005).

Almost surely, 2^116660009 is an apocalyptic number.

It is an amenable number.

116660009 is a deficient number, since it is larger than the sum of its proper divisors (1).

116660009 is an equidigital number, since it uses as much as digits as its factorization.

116660009 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1944, while the sum is 29.

The square root of 116660009 is about 10800.9263028687. The cubic root of 116660009 is about 488.6231080636.

The spelling of 116660009 in words is "one hundred sixteen million, six hundred sixty thousand, nine".