116277661 has 2 divisors, whose sum is σ = 116277662. Its totient is φ = 116277660.

The previous prime is 116277653. The next prime is 116277691. The reversal of 116277661 is 166772611.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 106729561 + 9548100 = 10331^2 + 3090^2 .

It is an emirp because it is prime and its reverse (166772611) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 116277661 - 2³ = 116277653 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 116277661.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (116277611) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 58138830 + 58138831.

It is an arithmetic number, because the mean of its divisors is an integer number (58138831).

Almost surely, 2^116277661 is an apocalyptic number.

It is an amenable number.

116277661 is a deficient number, since it is larger than the sum of its proper divisors (1).

116277661 is an equidigital number, since it uses as much as digits as its factorization.

116277661 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 21168, while the sum is 37.

The square root of 116277661 is about 10783.2119982870. The cubic root of 116277661 is about 488.0887103018.

The spelling of 116277661 in words is "one hundred sixteen million, two hundred seventy-seven thousand, six hundred sixty-one".