65589420 has 48 divisors (see below), whose sum is σ = 197779680. Its totient is φ = 16144896.

The previous prime is 65589413. The next prime is 65589421. The reversal of 65589420 is 2498556.

65589420 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is not an unprimeable number, because it can be changed into a prime (65589421) 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 15 ways as a sum of consecutive naturals, for example, 41265 + ... + 42824.

It is an arithmetic number, because the mean of its divisors is an integer number (4120410).

Almost surely, 2^65589420 is an apocalyptic number.

65589420 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

65589420 is an abundant number, since it is smaller than the sum of its proper divisors (132190260).

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

65589420 is a wasteful number, since it uses less digits than its factorization.

65589420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84114 (or 84112 counting only the distinct ones).

The product of its (nonzero) digits is 86400, while the sum is 39.

The square root of 65589420 is about 8098.7295299942. The cubic root of 65589420 is about 403.2842520853.

The spelling of 65589420 in words is "sixty-five million, five hundred eighty-nine thousand, four hundred twenty".