128466497 has 2 divisors, whose sum is σ = 128466498. Its totient is φ = 128466496.

The previous prime is 128466473. The next prime is 128466517. The reversal of 128466497 is 794664821.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 121198081 + 7268416 = 11009^2 + 2696^2 .

It is a cyclic number.

It is not a de Polignac number, because 128466497 - 2¹⁸ = 128204353 is a prime.

It is not a weakly prime, because it can be changed into another prime (128466097) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64233248 + 64233249.

It is an arithmetic number, because the mean of its divisors is an integer number (64233249).

Almost surely, 2^128466497 is an apocalyptic number.

It is an amenable number.

128466497 is a deficient number, since it is larger than the sum of its proper divisors (1).

128466497 is an equidigital number, since it uses as much as digits as its factorization.

128466497 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 580608, while the sum is 47.

The square root of 128466497 is about 11334.3061984402. The cubic root of 128466497 is about 504.5799166383.

The spelling of 128466497 in words is "one hundred twenty-eight million, four hundred sixty-six thousand, four hundred ninety-seven".