128625698 has 8 divisors (see below), whose sum is σ = 196101660. Its totient is φ = 63258480.

The previous prime is 128625677. The next prime is 128625709. The reversal of 128625698 is 896526821.

It can be written as a sum of positive squares in 2 ways, for example, as 122036209 + 6589489 = 11047^2 + 2567^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 527033 + ... + 527276.

Almost surely, 2^128625698 is an apocalyptic number.

128625698 is a deficient number, since it is larger than the sum of its proper divisors (67475962).

128625698 is a wasteful number, since it uses less digits than its factorization.

128625698 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1054372.

The product of its digits is 414720, while the sum is 47.

The square root of 128625698 is about 11341.3269946687. The cubic root of 128625698 is about 504.7882627036.

The spelling of 128625698 in words is "one hundred twenty-eight million, six hundred twenty-five thousand, six hundred ninety-eight".