817377241 has 2 divisors, whose sum is σ = 817377242. Its totient is φ = 817377240.

The previous prime is 817377227. The next prime is 817377263. The reversal of 817377241 is 142773718.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 701190400 + 116186841 = 26480^2 + 10779^2 .

It is a cyclic number.

It is not a de Polignac number, because 817377241 - 2²⁷ = 683159513 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 817377194 and 817377203.

It is not a weakly prime, because it can be changed into another prime (817377541) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 408688620 + 408688621.

It is an arithmetic number, because the mean of its divisors is an integer number (408688621).

Almost surely, 2^817377241 is an apocalyptic number.

It is an amenable number.

817377241 is a deficient number, since it is larger than the sum of its proper divisors (1).

817377241 is an equidigital number, since it uses as much as digits as its factorization.

817377241 is an evil number, because the sum of its binary digits is even.

The product of its digits is 65856, while the sum is 40.

The square root of 817377241 is about 28589.8100903101. The cubic root of 817377241 is about 934.9911791517.

The spelling of 817377241 in words is "eight hundred seventeen million, three hundred seventy-seven thousand, two hundred forty-one".