128606787 has 12 divisors (see below), whose sum is σ = 186076384. Its totient is φ = 85594320.

The previous prime is 128606767. The next prime is 128606789. The reversal of 128606787 is 787606821.

It is not a de Polignac number, because 128606787 - 2¹¹ = 128604739 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (128606789) 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 in 11 ways as a sum of consecutive naturals, for example, 6139 + ... + 17172.

Almost surely, 2^128606787 is an apocalyptic number.

128606787 is a deficient number, since it is larger than the sum of its proper divisors (57469597).

128606787 is a wasteful number, since it uses less digits than its factorization.

128606787 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23930 (or 23927 counting only the distinct ones).

The product of its (nonzero) digits is 225792, while the sum is 45.

The square root of 128606787 is about 11340.4932432412. The cubic root of 128606787 is about 504.7635229125.

The spelling of 128606787 in words is "one hundred twenty-eight million, six hundred six thousand, seven hundred eighty-seven".