116665777 has 2 divisors, whose sum is σ = 116665778. Its totient is φ = 116665776.

The previous prime is 116665763. The next prime is 116665793. The reversal of 116665777 is 777566611.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 58920976 + 57744801 = 7676^2 + 7599^2 .

It is an emirp because it is prime and its reverse (777566611) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 116665777 - 2¹⁵ = 116633009 is a prime.

It is a super-2 number, since 2×116665777² = 27221807046027458, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (116660777) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 58332888 + 58332889.

It is an arithmetic number, because the mean of its divisors is an integer number (58332889).

Almost surely, 2^116665777 is an apocalyptic number.

It is an amenable number.

116665777 is a deficient number, since it is larger than the sum of its proper divisors (1).

116665777 is an equidigital number, since it uses as much as digits as its factorization.

116665777 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 370440, while the sum is 46.

The square root of 116665777 is about 10801.1933137038. The cubic root of 116665777 is about 488.6311608992.

The spelling of 116665777 in words is "one hundred sixteen million, six hundred sixty-five thousand, seven hundred seventy-seven".