128963077 has 2 divisors, whose sum is σ = 128963078. Its totient is φ = 128963076.

The previous prime is 128963053. The next prime is 128963099. The reversal of 128963077 is 770369821.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 128731716 + 231361 = 11346^2 + 481^2 .

It is a cyclic number.

It is not a de Polignac number, because 128963077 - 2¹¹ = 128961029 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (128963777) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64481538 + 64481539.

It is an arithmetic number, because the mean of its divisors is an integer number (64481539).

Almost surely, 2^128963077 is an apocalyptic number.

128963077 is the 6557-th hex number.

It is an amenable number.

128963077 is a deficient number, since it is larger than the sum of its proper divisors (1).

128963077 is an equidigital number, since it uses as much as digits as its factorization.

128963077 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 127008, while the sum is 43.

The square root of 128963077 is about 11356.1911308326. The cubic root of 128963077 is about 505.2292224754.

The spelling of 128963077 in words is "one hundred twenty-eight million, nine hundred sixty-three thousand, seventy-seven".