997276177 has 2 divisors, whose sum is σ = 997276178. Its totient is φ = 997276176.

The previous prime is 997276103. The next prime is 997276187. The reversal of 997276177 is 771672799.

997276177 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 988222096 + 9054081 = 31436^2 + 3009^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-997276177 is a prime.

It is not a weakly prime, because it can be changed into another prime (997276187) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 498638088 + 498638089.

It is an arithmetic number, because the mean of its divisors is an integer number (498638089).

Almost surely, 2^997276177 is an apocalyptic number.

It is an amenable number.

997276177 is a deficient number, since it is larger than the sum of its proper divisors (1).

997276177 is an equidigital number, since it uses as much as digits as its factorization.

997276177 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2333772, while the sum is 55.

The square root of 997276177 is about 31579.6798115497. The cubic root of 997276177 is about 999.0912333934.

The spelling of 997276177 in words is "nine hundred ninety-seven million, two hundred seventy-six thousand, one hundred seventy-seven".