1016805 has 16 divisors (see below), whose sum is σ = 1658880. Its totient is φ = 531648.

The previous prime is 1016789. The next prime is 1016839. The reversal of 1016805 is 5086101.

It is not a de Polignac number, because 1016805 - 2⁴ = 1016789 is a prime.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 156 + ... + 1434.

It is an arithmetic number, because the mean of its divisors is an integer number (103680).

2^1016805 is an apocalyptic number.

1016805 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1016805 is a deficient number, since it is larger than the sum of its proper divisors (642075).

1016805 is a wasteful number, since it uses less digits than its factorization.

1016805 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1340.

The product of its (nonzero) digits is 240, while the sum is 21.

The square root of 1016805 is about 1008.3674925343. The cubic root of 1016805 is about 100.5570577710.

The spelling of 1016805 in words is "one million, sixteen thousand, eight hundred five".