330061561 has 4 divisors (see below), whose sum is σ = 331789824. Its totient is φ = 328333300.

The previous prime is 330061549. The next prime is 330061577. The reversal of 330061561 is 165160033.

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 330061561 - 2⁹ = 330061049 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (330061541) 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 3 ways as a sum of consecutive naturals, for example, 863845 + ... + 864226.

It is an arithmetic number, because the mean of its divisors is an integer number (82947456).

Almost surely, 2^330061561 is an apocalyptic number.

It is an amenable number.

330061561 is a deficient number, since it is larger than the sum of its proper divisors (1728263).

330061561 is a wasteful number, since it uses less digits than its factorization.

330061561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1728262.

The product of its (nonzero) digits is 1620, while the sum is 25.

The square root of 330061561 is about 18167.5964563285. The cubic root of 330061561 is about 691.0852912954.

The spelling of 330061561 in words is "three hundred thirty million, sixty-one thousand, five hundred sixty-one".