1006999 has 6 divisors (see below), whose sum is σ = 1171464. Its totient is φ = 863100.

The previous prime is 1006991. The next prime is 1007021. The reversal of 1006999 is 9996001.

It is a happy number.

It is not a de Polignac number, because 1006999 - 2³ = 1006991 is a prime.

It is a zygodrome in base 6.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1006991) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 10227 + ... + 10324.

It is an arithmetic number, because the mean of its divisors is an integer number (195244).

2^1006999 is an apocalyptic number.

1006999 is a deficient number, since it is larger than the sum of its proper divisors (164465).

1006999 is an equidigital number, since it uses as much as digits as its factorization.

1006999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20565 (or 20558 counting only the distinct ones).

The product of its (nonzero) digits is 4374, while the sum is 34.

The square root of 1006999 is about 1003.4933980849. The cubic root of 1006999 is about 100.2327578177.

The spelling of 1006999 in words is "one million, six thousand, nine hundred ninety-nine".