128659964 has 6 divisors (see below), whose sum is σ = 225154944. Its totient is φ = 64329980.

The previous prime is 128659957. The next prime is 128659967. The reversal of 128659964 is 469956821.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128659967) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16082492 + ... + 16082499.

It is an arithmetic number, because the mean of its divisors is an integer number (37525824).

Almost surely, 2^128659964 is an apocalyptic number.

It is an amenable number.

128659964 is a deficient number, since it is larger than the sum of its proper divisors (96494980).

128659964 is a wasteful number, since it uses less digits than its factorization.

128659964 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32164995 (or 32164993 counting only the distinct ones).

The product of its digits is 933120, while the sum is 50.

The square root of 128659964 is about 11342.8375638550. The cubic root of 128659964 is about 504.8330840706.

The spelling of 128659964 in words is "one hundred twenty-eight million, six hundred fifty-nine thousand, nine hundred sixty-four".