330640613 has 2 divisors, whose sum is σ = 330640614. Its totient is φ = 330640612.

The previous prime is 330640601. The next prime is 330640643. The reversal of 330640613 is 316046033.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 226743364 + 103897249 = 15058^2 + 10193^2 .

It is a cyclic number.

It is not a de Polignac number, because 330640613 - 2⁶ = 330640549 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (330640643) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 165320306 + 165320307.

It is an arithmetic number, because the mean of its divisors is an integer number (165320307).

Almost surely, 2^330640613 is an apocalyptic number.

It is an amenable number.

330640613 is a deficient number, since it is larger than the sum of its proper divisors (1).

330640613 is an equidigital number, since it uses as much as digits as its factorization.

330640613 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3888, while the sum is 26.

The square root of 330640613 is about 18183.5258682138. The cubic root of 330640613 is about 691.4891962801.

Adding to 330640613 its reverse (316046033), we get a palindrome (646686646).

The spelling of 330640613 in words is "three hundred thirty million, six hundred forty thousand, six hundred thirteen".