1065540 has 96 divisors (see below), whose sum is σ = 3548160. Its totient is φ = 233856.

The previous prime is 1065529. The next prime is 1065557. The reversal of 1065540 is 455601.

1065540 = T₇₁ + T₇₂ + ... + T₁₈₈.

It is a happy number.

It is a super-2 number, since 2×1065540² = 2270750983200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is an Ulam number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 18031 + ... + 18089.

It is an arithmetic number, because the mean of its divisors is an integer number (36960).

2^1065540 is an apocalyptic number.

1065540 is a gapful number since it is divisible by the number (10) 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 1065540, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1774080).

1065540 is an abundant number, since it is smaller than the sum of its proper divisors (2482620).

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

1065540 is a wasteful number, since it uses less digits than its factorization.

1065540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 121 (or 119 counting only the distinct ones).

The product of its (nonzero) digits is 600, while the sum is 21.

The square root of 1065540 is about 1032.2499697263. The cubic root of 1065540 is about 102.1386043420.

The spelling of 1065540 in words is "one million, sixty-five thousand, five hundred forty".