328643577 has 24 divisors (see below), whose sum is σ = 488936448. Its totient is φ = 212587200.

The previous prime is 328643561. The next prime is 328643641. The reversal of 328643577 is 775346823.

328643577 is a `hidden beast` number, since 32 + 8 + 6 + 43 + 577 = 666.

It is not a de Polignac number, because 328643577 - 2⁴ = 328643561 is a prime.

It is not an unprimeable number, because it can be changed into a prime (328643377) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 68148 + ... + 72810.

It is an arithmetic number, because the mean of its divisors is an integer number (20372352).

Almost surely, 2^328643577 is an apocalyptic number.

It is an amenable number.

328643577 is a deficient number, since it is larger than the sum of its proper divisors (160292871).

328643577 is a wasteful number, since it uses less digits than its factorization.

328643577 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4901 (or 4898 counting only the distinct ones).

The product of its digits is 846720, while the sum is 45.

The square root of 328643577 is about 18128.5293667192. The cubic root of 328643577 is about 690.0942089388.

The spelling of 328643577 in words is "three hundred twenty-eight million, six hundred forty-three thousand, five hundred seventy-seven".