65755540 has 12 divisors (see below), whose sum is σ = 138086676. Its totient is φ = 26302208.

The previous prime is 65755531. The next prime is 65755567. The reversal of 65755540 is 4555756.

It can be written as a sum of positive squares in 2 ways, for example, as 22695696 + 43059844 = 4764^2 + 6562^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 65755540.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1643869 + ... + 1643908.

It is an arithmetic number, because the mean of its divisors is an integer number (11507223).

Almost surely, 2^65755540 is an apocalyptic number.

It is an amenable number.

65755540 is an abundant number, since it is smaller than the sum of its proper divisors (72331136).

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

65755540 is a wasteful number, since it uses less digits than its factorization.

65755540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3287786 (or 3287784 counting only the distinct ones).

The product of its (nonzero) digits is 105000, while the sum is 37.

The square root of 65755540 is about 8108.9789739523. The cubic root of 65755540 is about 403.6244344938.

The spelling of 65755540 in words is "sixty-five million, seven hundred fifty-five thousand, five hundred forty".