65056140 has 72 divisors (see below), whose sum is σ = 200080608. Its totient is φ = 17107200.

The previous prime is 65056097. The next prime is 65056141. The reversal of 65056140 is 4165056.

It is a happy number.

65056140 is a `hidden beast` number, since 65 + 0 + 561 + 40 = 666.

65056140 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 (65056141) 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 23 ways as a sum of consecutive naturals, for example, 10665 + ... + 15615.

Almost surely, 2^65056140 is an apocalyptic number.

65056140 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 65056140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (100040304).

65056140 is an abundant number, since it is smaller than the sum of its proper divisors (135024468).

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

65056140 is a wasteful number, since it uses less digits than its factorization.

65056140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5039 (or 5034 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 27.

The square root of 65056140 is about 8065.7386518533. The cubic root of 65056140 is about 402.1882982128.

The spelling of 65056140 in words is "sixty-five million, fifty-six thousand, one hundred forty".