65897128 has 16 divisors (see below), whose sum is σ = 134789760. Its totient is φ = 29953200.

The previous prime is 65897123. The next prime is 65897129. The reversal of 65897128 is 82179856.

65897128 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (65897123) 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 3 ways as a sum of consecutive naturals, for example, 374328 + ... + 374503.

It is an arithmetic number, because the mean of its divisors is an integer number (8424360).

Almost surely, 2^65897128 is an apocalyptic number.

It is an amenable number.

65897128 is an abundant number, since it is smaller than the sum of its proper divisors (68892632).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

65897128 is a wasteful number, since it uses less digits than its factorization.

65897128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 748848 (or 748844 counting only the distinct ones).

The product of its digits is 241920, while the sum is 46.

The square root of 65897128 is about 8117.7046016716. The cubic root of 65897128 is about 403.9139280088.

The spelling of 65897128 in words is "sixty-five million, eight hundred ninety-seven thousand, one hundred twenty-eight".