328742069 has 2 divisors, whose sum is σ = 328742070. Its totient is φ = 328742068.

The previous prime is 328742053. The next prime is 328742083. The reversal of 328742069 is 960247823.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 303108100 + 25633969 = 17410^2 + 5063^2 .

It is an emirp because it is prime and its reverse (960247823) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 328742069 - 2⁴ = 328742053 is a prime.

It is a super-2 number, since 2×328742069² = 216142695860801522, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (328742269) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 164371034 + 164371035.

It is an arithmetic number, because the mean of its divisors is an integer number (164371035).

Almost surely, 2^328742069 is an apocalyptic number.

It is an amenable number.

328742069 is a deficient number, since it is larger than the sum of its proper divisors (1).

328742069 is an equidigital number, since it uses as much as digits as its factorization.

328742069 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 145152, while the sum is 41.

The square root of 328742069 is about 18131.2456549460. The cubic root of 328742069 is about 690.1631407287.

It can be divided in two parts, 32874 and 2069, that added together give a palindrome (34943).

The spelling of 328742069 in words is "three hundred twenty-eight million, seven hundred forty-two thousand, sixty-nine".