330668661 has 16 divisors (see below), whose sum is σ = 455671808. Its totient is φ = 213073200.

The previous prime is 330668659. The next prime is 330668671. The reversal of 330668661 is 166866033.

It is not a de Polignac number, because 330668661 - 2¹ = 330668659 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (330668671) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 99456 + ... + 102726.

It is an arithmetic number, because the mean of its divisors is an integer number (28479488).

Almost surely, 2^330668661 is an apocalyptic number.

330668661 is a gapful number since it is divisible by the number (31) formed by its first and last digit.

It is an amenable number.

330668661 is a deficient number, since it is larger than the sum of its proper divisors (125003147).

330668661 is a wasteful number, since it uses less digits than its factorization.

330668661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4392.

The product of its (nonzero) digits is 93312, while the sum is 39.

The square root of 330668661 is about 18184.2970994207. The cubic root of 330668661 is about 691.5087485672.

The spelling of 330668661 in words is "three hundred thirty million, six hundred sixty-eight thousand, six hundred sixty-one".