1006690 has 8 divisors (see below), whose sum is σ = 1812060. Its totient is φ = 402672.

The previous prime is 1006651. The next prime is 1006711. The reversal of 1006690 is 966001.

It can be written as a sum of positive squares in 2 ways, for example, as 966289 + 40401 = 983^2 + 201^2 .

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

It is a super-2 number, since 2×1006690² = 2026849512200, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 50325 + ... + 50344.

2^1006690 is an apocalyptic number.

1006690 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1006690 is a deficient number, since it is larger than the sum of its proper divisors (805370).

1006690 is a wasteful number, since it uses less digits than its factorization.

1006690 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100676.

The product of its (nonzero) digits is 324, while the sum is 22.

The square root of 1006690 is about 1003.3394241233. The cubic root of 1006690 is about 100.2225045501. Note that the first 3 decimals are identical.

The spelling of 1006690 in words is "one million, six thousand, six hundred ninety".