65627440 has 20 divisors (see below), whose sum is σ = 152583984. Its totient is φ = 26250944.

The previous prime is 65627437. The next prime is 65627447. The reversal of 65627440 is 4472656.

65627440 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (20).

It is a junction number, because it is equal to n+sod(n) for n = 65627396 and 65627405.

It is not an unprimeable number, because it can be changed into a prime (65627447) 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, 410092 + ... + 410251.

Almost surely, 2^65627440 is an apocalyptic number.

It is an amenable number.

65627440 is an abundant number, since it is smaller than the sum of its proper divisors (86956544).

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

65627440 is a wasteful number, since it uses less digits than its factorization.

65627440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 820356 (or 820350 counting only the distinct ones).

The product of its (nonzero) digits is 40320, while the sum is 34.

The square root of 65627440 is about 8101.0764716796. The cubic root of 65627440 is about 403.3621605120.

The spelling of 65627440 in words is "sixty-five million, six hundred twenty-seven thousand, four hundred forty".