1065555540 has 96 divisors (see below), whose sum is σ = 3788655360. Its totient is φ = 243554688.

The previous prime is 1065555539. The next prime is 1065555553. The reversal of 1065555540 is 455555601.

1065555540 is a `hidden beast` number, since 1 + 0 + 65 + 5 + 55 + 540 = 666.

1065555540 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×1065555540² = 2270817217649383200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 1065555495 and 1065555504.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 137167 + ... + 144726.

It is an arithmetic number, because the mean of its divisors is an integer number (39465160).

Almost surely, 2^1065555540 is an apocalyptic number.

1065555540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1065555540 is an abundant number, since it is smaller than the sum of its proper divisors (2723099820).

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

1065555540 is a wasteful number, since it uses less digits than its factorization.

1065555540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 281918 (or 281910 counting only the distinct ones).

The product of its (nonzero) digits is 75000, while the sum is 36.

The square root of 1065555540 is about 32642.8482213179. The cubic root of 1065555540 is about 1021.3910087461.

The spelling of 1065555540 in words is "one billion, sixty-five million, five hundred fifty-five thousand, five hundred forty".