1000605 has 16 divisors (see below), whose sum is σ = 1641024. Its totient is φ = 520320.

The previous prime is 1000589. The next prime is 1000609. The reversal of 1000605 is 5060001.

It is not a de Polignac number, because 1000605 - 2⁴ = 1000589 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1000609) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 199 + ... + 1428.

It is an arithmetic number, because the mean of its divisors is an integer number (102564).

2^1000605 is an apocalyptic number.

1000605 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1000605 is a deficient number, since it is larger than the sum of its proper divisors (640419).

1000605 is a wasteful number, since it uses less digits than its factorization.

1000605 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1676.

The product of its (nonzero) digits is 30, while the sum is 12.

The square root of 1000605 is about 1000.3024542607. The cubic root of 1000605 is about 100.0201626011.

Adding to 1000605 its reverse (5060001), we get a palindrome (6060606).

The spelling of 1000605 in words is "one million, six hundred five", and thus it is an aban number.