1006330681 has 4 divisors (see below), whose sum is σ = 1009214500. Its totient is φ = 1003446864.

The previous prime is 1006330673. The next prime is 1006330697. The reversal of 1006330681 is 1860336001.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 343731600 + 662599081 = 18540^2 + 25741^2 .

It is a cyclic number.

It is not a de Polignac number, because 1006330681 - 2³ = 1006330673 is a prime.

It is a super-3 number, since 3×1006330681³ (a number of 28 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1006330631) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1441386 + ... + 1442083.

It is an arithmetic number, because the mean of its divisors is an integer number (252303625).

Almost surely, 2^1006330681 is an apocalyptic number.

It is an amenable number.

1006330681 is a deficient number, since it is larger than the sum of its proper divisors (2883819).

1006330681 is an equidigital number, since it uses as much as digits as its factorization.

1006330681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2883818.

The product of its (nonzero) digits is 2592, while the sum is 28.

The square root of 1006330681 is about 31722.7155363471. The cubic root of 1006330681 is about 1002.1057895378.

Adding to 1006330681 its reverse (1860336001), we get a palindrome (2866666682).

The spelling of 1006330681 in words is "one billion, six million, three hundred thirty thousand, six hundred eighty-one".