880128065 has 8 divisors (see below), whose sum is σ = 1084698600. Its totient is φ = 685072512.

The previous prime is 880128049. The next prime is 880128079. The reversal of 880128065 is 560821088.

It can be written as a sum of positive squares in 4 ways, for example, as 193321216 + 686806849 = 13904^2 + 26207^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 880128065 - 2⁴ = 880128049 is a prime.

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 7 ways as a sum of consecutive naturals, for example, 2378540 + ... + 2378909.

It is an arithmetic number, because the mean of its divisors is an integer number (135587325).

Almost surely, 2^880128065 is an apocalyptic number.

It is an amenable number.

880128065 is a deficient number, since it is larger than the sum of its proper divisors (204570535).

880128065 is a wasteful number, since it uses less digits than its factorization.

880128065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4757491.

The product of its (nonzero) digits is 30720, while the sum is 38.

The square root of 880128065 is about 29666.9524049910. The cubic root of 880128065 is about 958.3304550050.

The spelling of 880128065 in words is "eight hundred eighty million, one hundred twenty-eight thousand, sixty-five".