328705277 has 2 divisors, whose sum is σ = 328705278. Its totient is φ = 328705276.

The previous prime is 328705261. The next prime is 328705309. The reversal of 328705277 is 772507823.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 274697476 + 54007801 = 16574^2 + 7349^2 .

It is an emirp because it is prime and its reverse (772507823) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 328705277 - 2⁴ = 328705261 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (328705477) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 164352638 + 164352639.

It is an arithmetic number, because the mean of its divisors is an integer number (164352639).

Almost surely, 2^328705277 is an apocalyptic number.

It is an amenable number.

328705277 is a deficient number, since it is larger than the sum of its proper divisors (1).

328705277 is an equidigital number, since it uses as much as digits as its factorization.

328705277 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 164640, while the sum is 41.

The square root of 328705277 is about 18130.2310244519. The cubic root of 328705277 is about 690.1373926504.

The spelling of 328705277 in words is "three hundred twenty-eight million, seven hundred five thousand, two hundred seventy-seven".