1006540 has 24 divisors (see below), whose sum is σ = 2152080. Its totient is φ = 395328.

The previous prime is 1006531. The next prime is 1006543. The reversal of 1006540 is 456001.

It is not an unprimeable number, because it can be changed into a prime (1006543) 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 7 ways as a sum of consecutive naturals, for example, 754 + ... + 1606.

It is an arithmetic number, because the mean of its divisors is an integer number (89670).

2^1006540 is an apocalyptic number.

1006540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1006540 is an abundant number, since it is smaller than the sum of its proper divisors (1145540).

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

1006540 is a wasteful number, since it uses less digits than its factorization.

1006540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 921 (or 919 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 16.

The square root of 1006540 is about 1003.2646709618. The cubic root of 1006540 is about 100.2175264792.

The spelling of 1006540 in words is "one million, six thousand, five hundred forty".