1008861 has 12 divisors (see below), whose sum is σ = 1564992. Its totient is φ = 576408.

The previous prime is 1008859. The next prime is 1008863. The reversal of 1008861 is 1688001.

It is an interprime number because it is at equal distance from previous prime (1008859) and next prime (1008863).

It is not a de Polignac number, because 1008861 - 2¹ = 1008859 is a prime.

It is a Curzon number.

1008861 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1008863) 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 11 ways as a sum of consecutive naturals, for example, 3285 + ... + 3578.

It is an arithmetic number, because the mean of its divisors is an integer number (130416).

2^1008861 is an apocalyptic number.

It is an amenable number.

1008861 is a deficient number, since it is larger than the sum of its proper divisors (556131).

1008861 is an equidigital number, since it uses as much as digits as its factorization.

1008861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6880 (or 6873 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 24.

The square root of 1008861 is about 1004.4207285794. The cubic root of 1008861 is about 100.2944985215.

The spelling of 1008861 in words is "one million, eight thousand, eight hundred sixty-one".