1006681 has 8 divisors (see below), whose sum is σ = 1092224. Its totient is φ = 922320.

The previous prime is 1006651. The next prime is 1006711. The reversal of 1006681 is 1866001.

It is an interprime number because it is at equal distance from previous prime (1006651) and next prime (1006711).

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

It is a cyclic number.

It is not a de Polignac number, because 1006681 - 2⁹ = 1006169 is a prime.

It is a super-2 number, since 2×1006681² = 2026813271522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1006651) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2560 + ... + 2926.

It is an arithmetic number, because the mean of its divisors is an integer number (136528).

2^1006681 is an apocalyptic number.

It is an amenable number.

1006681 is a deficient number, since it is larger than the sum of its proper divisors (85543).

1006681 is a wasteful number, since it uses less digits than its factorization.

1006681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 591.

The product of its (nonzero) digits is 288, while the sum is 22.

The square root of 1006681 is about 1003.3349390906. The cubic root of 1006681 is about 100.2222058798. Note that the first 4 decimals are identical.

The spelling of 1006681 in words is "one million, six thousand, six hundred eighty-one".