65623128 has 32 divisors (see below), whose sum is σ = 173709360. Its totient is φ = 20587520.

The previous prime is 65623127. The next prime is 65623141. The reversal of 65623128 is 82132656.

65623128 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a hoax number, since the sum of its digits (33) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65623127) 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 7 ways as a sum of consecutive naturals, for example, 80013 + ... + 80828.

Almost surely, 2^65623128 is an apocalyptic number.

65623128 is a gapful number since it is divisible by the number (68) formed by its first and last digit.

It is an amenable number.

65623128 is an abundant number, since it is smaller than the sum of its proper divisors (108086232).

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

65623128 is a wasteful number, since it uses less digits than its factorization.

65623128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 160867 (or 160863 counting only the distinct ones).

The product of its digits is 17280, while the sum is 33.

The square root of 65623128 is about 8100.8103298374. The cubic root of 65623128 is about 403.3533261193.

The spelling of 65623128 in words is "sixty-five million, six hundred twenty-three thousand, one hundred twenty-eight".