118407661 has 2 divisors, whose sum is σ = 118407662. Its totient is φ = 118407660.

The previous prime is 118407629. The next prime is 118407683. The reversal of 118407661 is 166704811.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 80892036 + 37515625 = 8994^2 + 6125^2 .

It is a cyclic number.

It is not a de Polignac number, because 118407661 - 2⁵ = 118407629 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (118407361) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 59203830 + 59203831.

It is an arithmetic number, because the mean of its divisors is an integer number (59203831).

Almost surely, 2^118407661 is an apocalyptic number.

It is an amenable number.

118407661 is a deficient number, since it is larger than the sum of its proper divisors (1).

118407661 is an equidigital number, since it uses as much as digits as its factorization.

118407661 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8064, while the sum is 34.

The square root of 118407661 is about 10881.5284312453. The cubic root of 118407661 is about 491.0510010722.

The spelling of 118407661 in words is "one hundred eighteen million, four hundred seven thousand, six hundred sixty-one".