1016905 has 4 divisors (see below), whose sum is σ = 1220292. Its totient is φ = 813520.

The previous prime is 1016891. The next prime is 1016909. The reversal of 1016905 is 5096101.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5096101 = 1993 ⋅2557.

It can be written as a sum of positive squares in 2 ways, for example, as 394384 + 622521 = 628^2 + 789^2 .

It is not a de Polignac number, because 1016905 - 2⁷ = 1016777 is a prime.

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an alternating number because its digits alternate between odd and even.

It is a Duffinian number.

1016905 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (1016909) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 101686 + ... + 101695.

It is an arithmetic number, because the mean of its divisors is an integer number (305073).

2^1016905 is an apocalyptic number.

It is an amenable number.

1016905 is a deficient number, since it is larger than the sum of its proper divisors (203387).

1016905 is an equidigital number, since it uses as much as digits as its factorization.

1016905 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 203386.

The product of its (nonzero) digits is 270, while the sum is 22.

The square root of 1016905 is about 1008.4170764123. The cubic root of 1016905 is about 100.5603541671.

The spelling of 1016905 in words is "one million, sixteen thousand, nine hundred five".