1006646 has 8 divisors (see below), whose sum is σ = 1542240. Its totient is φ = 492568.

The previous prime is 1006637. The next prime is 1006651. The reversal of 1006646 is 6466001.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5261 + ... + 5448.

It is an arithmetic number, because the mean of its divisors is an integer number (192780).

2^1006646 is an apocalyptic number.

1006646 is a deficient number, since it is larger than the sum of its proper divisors (535594).

1006646 is a wasteful number, since it uses less digits than its factorization.

1006646 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10758.

The product of its (nonzero) digits is 864, while the sum is 23.

The square root of 1006646 is about 1003.3174971065. The cubic root of 1006646 is about 100.2210443672.

The spelling of 1006646 in words is "one million, six thousand, six hundred forty-six".