328858643 has 4 divisors (see below), whose sum is σ = 330580608. Its totient is φ = 327136680.

The previous prime is 328858597. The next prime is 328858657. The reversal of 328858643 is 346858823.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 328858643 - 2¹⁰ = 328857619 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (328258643) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 860696 + ... + 861077.

It is an arithmetic number, because the mean of its divisors is an integer number (82645152).

Almost surely, 2^328858643 is an apocalyptic number.

328858643 is a deficient number, since it is larger than the sum of its proper divisors (1721965).

328858643 is a wasteful number, since it uses less digits than its factorization.

328858643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1721964.

The product of its digits is 1105920, while the sum is 47.

The square root of 328858643 is about 18134.4600967330. The cubic root of 328858643 is about 690.2447098143.

The spelling of 328858643 in words is "three hundred twenty-eight million, eight hundred fifty-eight thousand, six hundred forty-three".