329020061 has 2 divisors, whose sum is σ = 329020062. Its totient is φ = 329020060.

The previous prime is 329020009. The next prime is 329020063. The reversal of 329020061 is 160020923.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 169780900 + 159239161 = 13030^2 + 12619^2 .

It is a cyclic number.

It is not a de Polignac number, because 329020061 - 2⁶ = 329019997 is a prime.

Together with 329020063, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (329020063) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 164510030 + 164510031.

It is an arithmetic number, because the mean of its divisors is an integer number (164510031).

Almost surely, 2^329020061 is an apocalyptic number.

It is an amenable number.

329020061 is a deficient number, since it is larger than the sum of its proper divisors (1).

329020061 is an equidigital number, since it uses as much as digits as its factorization.

329020061 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 648, while the sum is 23.

The square root of 329020061 is about 18138.9101381533. The cubic root of 329020061 is about 690.3576252957.

Adding to 329020061 its reverse (160020923), we get a palindrome (489040984).

The spelling of 329020061 in words is "three hundred twenty-nine million, twenty thousand, sixty-one".