330662561 has 4 divisors (see below), whose sum is σ = 338352432. Its totient is φ = 322972692.

The previous prime is 330662557. The next prime is 330662569. The reversal of 330662561 is 165266033.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 330662561 - 2² = 330662557 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (330662569) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3844871 + ... + 3844956.

It is an arithmetic number, because the mean of its divisors is an integer number (84588108).

Almost surely, 2^330662561 is an apocalyptic number.

It is an amenable number.

330662561 is a deficient number, since it is larger than the sum of its proper divisors (7689871).

330662561 is an equidigital number, since it uses as much as digits as its factorization.

330662561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7689870.

The product of its (nonzero) digits is 19440, while the sum is 32.

The square root of 330662561 is about 18184.1293715152. The cubic root of 330662561 is about 691.5044963456.

The spelling of 330662561 in words is "three hundred thirty million, six hundred sixty-two thousand, five hundred sixty-one".