1066540 has 12 divisors (see below), whose sum is σ = 2239776. Its totient is φ = 426608.

The previous prime is 1066531. The next prime is 1066553. The reversal of 1066540 is 456601.

It is a super-2 number, since 2×1066540² = 2275015143200, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 26644 + ... + 26683.

It is an arithmetic number, because the mean of its divisors is an integer number (186648).

2^1066540 is an apocalyptic number.

1066540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1066540 is an abundant number, since it is smaller than the sum of its proper divisors (1173236).

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

1066540 is a wasteful number, since it uses less digits than its factorization.

1066540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53336 (or 53334 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 22.

The square root of 1066540 is about 1032.7342349317. The cubic root of 1066540 is about 102.1705464148.

The spelling of 1066540 in words is "one million, sixty-six thousand, five hundred forty".