330672385 has 4 divisors (see below), whose sum is σ = 396806868. Its totient is φ = 264537904.

The previous prime is 330672383. The next prime is 330672431. The reversal of 330672385 is 583276033.

330672385 = T₁₄₈₄₆ + T₁₄₈₄₇ + T₁₄₈₄₈.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 583276033 = 439 ⋅1328647.

It can be written as a sum of positive squares in 2 ways, for example, as 259725456 + 70946929 = 16116^2 + 8423^2 .

It is a cyclic number.

It is not a de Polignac number, because 330672385 - 2¹ = 330672383 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (330672383) 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, 33067234 + ... + 33067243.

It is an arithmetic number, because the mean of its divisors is an integer number (99201717).

Almost surely, 2^330672385 is an apocalyptic number.

330672385 is the 14848-th centered triangular number.

It is an amenable number.

330672385 is a deficient number, since it is larger than the sum of its proper divisors (66134483).

330672385 is an equidigital number, since it uses as much as digits as its factorization.

330672385 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66134482.

The product of its (nonzero) digits is 90720, while the sum is 37.

The square root of 330672385 is about 18184.3994951717. The cubic root of 330672385 is about 691.5113444880.

The spelling of 330672385 in words is "three hundred thirty million, six hundred seventy-two thousand, three hundred eighty-five".