1006815 has 8 divisors (see below), whose sum is σ = 1610928. Its totient is φ = 536960.

The previous prime is 1006799. The next prime is 1006847. The reversal of 1006815 is 5186001.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1006815 - 2⁴ = 1006799 is a prime.

1006815 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 1006791 and 1006800.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 33546 + ... + 33575.

It is an arithmetic number, because the mean of its divisors is an integer number (201366).

2^1006815 is an apocalyptic number.

1006815 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1006815 is a deficient number, since it is larger than the sum of its proper divisors (604113).

1006815 is an equidigital number, since it uses as much as digits as its factorization.

1006815 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67129.

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

The square root of 1006815 is about 1003.4017141704. The cubic root of 1006815 is about 100.2266525647.

The spelling of 1006815 in words is "one million, six thousand, eight hundred fifteen".