328769645 has 8 divisors (see below), whose sum is σ = 398430360. Its totient is φ = 260411200.

The previous prime is 328769629. The next prime is 328769657. The reversal of 328769645 is 546967823.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 92409769 + 236359876 = 9613^2 + 15374^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 328769645 - 2⁴ = 328769629 is a prime.

It is a super-3 number, since 3×328769645³ (a number of 27 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 328769593 and 328769602.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 325010 + ... + 326019.

It is an arithmetic number, because the mean of its divisors is an integer number (49803795).

Almost surely, 2^328769645 is an apocalyptic number.

It is an amenable number.

328769645 is a deficient number, since it is larger than the sum of its proper divisors (69660715).

328769645 is a wasteful number, since it uses less digits than its factorization.

328769645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 651135.

The product of its digits is 2177280, while the sum is 50.

The square root of 328769645 is about 18132.0060941971. The cubic root of 328769645 is about 690.1824379310.

The spelling of 328769645 in words is "three hundred twenty-eight million, seven hundred sixty-nine thousand, six hundred forty-five".