65562140 has 48 divisors (see below), whose sum is σ = 158118912. Its totient is φ = 22368576.

The previous prime is 65562139. The next prime is 65562173. The reversal of 65562140 is 4126556.

65562140 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

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 15 ways as a sum of consecutive naturals, for example, 30749 + ... + 32811.

It is an arithmetic number, because the mean of its divisors is an integer number (3294144).

Almost surely, 2^65562140 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 65562140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (79059456).

65562140 is an abundant number, since it is smaller than the sum of its proper divisors (92556772).

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

65562140 is a wasteful number, since it uses less digits than its factorization.

65562140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2306 (or 2304 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 29.

The square root of 65562140 is about 8097.0451400495. The cubic root of 65562140 is about 403.2283329039.

Adding to 65562140 its reverse (4126556), we get a palindrome (69688696).

The spelling of 65562140 in words is "sixty-five million, five hundred sixty-two thousand, one hundred forty".