128630713 has 2 divisors, whose sum is σ = 128630714. Its totient is φ = 128630712.

The previous prime is 128630701. The next prime is 128630731. The reversal of 128630713 is 317036821.

Together with next prime (128630731) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 109244304 + 19386409 = 10452^2 + 4403^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-128630713 is a prime.

It is not a weakly prime, because it can be changed into another prime (128630773) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64315356 + 64315357.

It is an arithmetic number, because the mean of its divisors is an integer number (64315357).

Almost surely, 2^128630713 is an apocalyptic number.

It is an amenable number.

128630713 is a deficient number, since it is larger than the sum of its proper divisors (1).

128630713 is an equidigital number, since it uses as much as digits as its factorization.

128630713 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6048, while the sum is 31.

The square root of 128630713 is about 11341.5480865709. The cubic root of 128630713 is about 504.7948230315.

The spelling of 128630713 in words is "one hundred twenty-eight million, six hundred thirty thousand, seven hundred thirteen".