1006505 has 8 divisors (see below), whose sum is σ = 1233792. Its totient is φ = 787888.

The previous prime is 1006493. The next prime is 1006507. The reversal of 1006505 is 5056001.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1006505 - 2⁶ = 1006441 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1006507) 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, 1907 + ... + 2376.

It is an arithmetic number, because the mean of its divisors is an integer number (154224).

2^1006505 is an apocalyptic number.

It is an amenable number.

1006505 is a deficient number, since it is larger than the sum of its proper divisors (227287).

1006505 is an equidigital number, since it uses as much as digits as its factorization.

1006505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4335.

The product of its (nonzero) digits is 150, while the sum is 17.

The square root of 1006505 is about 1003.2472277560. The cubic root of 1006505 is about 100.2163648582.

The spelling of 1006505 in words is "one million, six thousand, five hundred five".