115716977 has 6 divisors (see below), whose sum is σ = 122570838. Its totient is φ = 108868352.

The previous prime is 115716959. The next prime is 115717001. The reversal of 115716977 is 779617511.

It can be written as a sum of positive squares in 3 ways, for example, as 28686736 + 87030241 = 5356^2 + 9329^2 .

It is not a de Polignac number, because 115716977 - 2⁸ = 115716721 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (115716917) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 43049 + ... + 45657.

It is an arithmetic number, because the mean of its divisors is an integer number (20428473).

Almost surely, 2^115716977 is an apocalyptic number.

115716977 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

It is an amenable number.

115716977 is a deficient number, since it is larger than the sum of its proper divisors (6853861).

115716977 is an frugal number, since it uses more digits than its factorization.

115716977 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5235 (or 2626 counting only the distinct ones).

The product of its digits is 92610, while the sum is 44.

The square root of 115716977 is about 10757.1825772365. The cubic root of 115716977 is about 487.3029343315.

The spelling of 115716977 in words is "one hundred fifteen million, seven hundred sixteen thousand, nine hundred seventy-seven".