1005885 has 16 divisors (see below), whose sum is σ = 1788480. Its totient is φ = 536400.

The previous prime is 1005883. The next prime is 1005911. The reversal of 1005885 is 5885001.

It is not a de Polignac number, because 1005885 - 2¹ = 1005883 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1005883) 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 15 ways as a sum of consecutive naturals, for example, 3591 + ... + 3860.

It is an arithmetic number, because the mean of its divisors is an integer number (111780).

2^1005885 is an apocalyptic number.

1005885 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1005885 is a deficient number, since it is larger than the sum of its proper divisors (782595).

1005885 is an equidigital number, since it uses as much as digits as its factorization.

1005885 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7465 (or 7459 counting only the distinct ones).

The product of its (nonzero) digits is 1600, while the sum is 27.

The square root of 1005885 is about 1002.9381835387. The cubic root of 1005885 is about 100.1957831063.

The spelling of 1005885 in words is "one million, five thousand, eight hundred eighty-five".